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18734131130 = 2511313108271
BaseRepresentation
bin10001011100101001…
…000010011110111010
31210100121120110121112
4101130221002132322
5301331414144010
612334545240322
71232151326051
oct213451023672
953317513545
1018734131130
117a43a24000
12376a0330a2
1319c73600c0
14c9a12b398
15749a6da05
hex45ca427ba

18734131130 has 64 divisors (see below), whose sum is σ = 39944572416. Its totient is φ = 6288321600.

The previous prime is 18734131127. The next prime is 18734131133. The reversal of 18734131130 is 3113143781.

It is an interprime number because it is at equal distance from previous prime (18734131127) and next prime (18734131133).

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18734131133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118895 + ... + 227165.

It is an arithmetic number, because the mean of its divisors is an integer number (624133944).

Almost surely, 218734131130 is an apocalyptic number.

18734131130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18734131130 is an abundant number, since it is smaller than the sum of its proper divisors (21210441286).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18734131130 is a wasteful number, since it uses less digits than its factorization.

18734131130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108324 (or 108302 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 18734131130 in words is "eighteen billion, seven hundred thirty-four million, one hundred thirty-one thousand, one hundred thirty".

Divisors: 1 2 5 10 11 13 22 26 55 65 110 121 130 143 242 286 605 715 1210 1331 1430 1573 2662 3146 6655 7865 13310 15730 17303 34606 86515 108271 173030 216542 541355 1082710 1190981 1407523 2381962 2815046 5954905 7037615 11909810 13100791 14075230 15482753 26201582 30965506 65503955 77413765 131007910 144108701 154827530 170310283 288217402 340620566 720543505 851551415 1441087010 1703102830 1873413113 3746826226 9367065565 18734131130