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18031740810 = 2351945077019
BaseRepresentation
bin10000110010110001…
…101000011110001010
31201112122220100020020
4100302301220132022
5243412111201220
612141134441310
71205562160626
oct206261503612
951478810206
1018031740810
1177134a1836
1235b2963236
131914994a25
14c30b30186
15708078040
hex432c6878a

18031740810 has 64 divisors (see below), whose sum is σ = 45570470400. Its totient is φ = 4553727552.

The previous prime is 18031740733. The next prime is 18031740827. The reversal of 18031740810 is 1804713081.

It is a super-2 number, since 2×180317408102 (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2565481 + ... + 2572499.

It is an arithmetic number, because the mean of its divisors is an integer number (712038600).

Almost surely, 218031740810 is an apocalyptic number.

18031740810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18031740810 is an abundant number, since it is smaller than the sum of its proper divisors (27538729590).

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

18031740810 is a wasteful number, since it uses less digits than its factorization.

18031740810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11555.

The product of its (nonzero) digits is 5376, while the sum is 33.

The spelling of 18031740810 in words is "eighteen billion, thirty-one million, seven hundred forty thousand, eight hundred ten".

Divisors: 1 2 3 5 6 10 15 19 30 38 57 95 114 190 285 570 4507 7019 9014 13521 14038 21057 22535 27042 35095 42114 45070 67605 70190 85633 105285 133361 135210 171266 210570 256899 266722 400083 428165 513798 666805 800166 856330 1284495 1333610 2000415 2568990 4000830 31634633 63269266 94903899 158173165 189807798 316346330 474519495 601058027 949038990 1202116054 1803174081 3005290135 3606348162 6010580270 9015870405 18031740810