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18007207150 = 2522331505111
BaseRepresentation
bin10000110001010100…
…000010110011101110
31201110221201220101011
4100301110002303232
5243334321112100
612134500535434
71205143510132
oct206124026356
951427656334
1018007207150
117700665289
1235a66b157a
13190c884b7a
14c2b7853c2
15705d2dbba
hex431502cee

18007207150 has 48 divisors (see below), whose sum is σ = 36077119488. Its totient is φ = 6667452000.

The previous prime is 18007207123. The next prime is 18007207151. The reversal of 18007207150 is 5170270081.

It is a happy number.

It is a super-2 number, since 2×180072071502 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18007207151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 216906 + ... + 288205.

It is an arithmetic number, because the mean of its divisors is an integer number (751606656).

Almost surely, 218007207150 is an apocalyptic number.

18007207150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18007207150 is an abundant number, since it is smaller than the sum of its proper divisors (18069912338).

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

18007207150 is a wasteful number, since it uses less digits than its factorization.

18007207150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505177 (or 505172 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 31.

The spelling of 18007207150 in words is "eighteen billion, seven million, two hundred seven thousand, one hundred fifty".

Divisors: 1 2 5 10 23 25 31 46 50 62 115 155 230 310 575 713 775 1150 1426 1550 3565 7130 17825 35650 505111 1010222 2525555 5051110 11617553 12627775 15658441 23235106 25255550 31316882 58087765 78292205 116175530 156584410 290438825 360144143 391461025 580877650 720288286 782922050 1800720715 3601441430 9003603575 18007207150