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18364104690 = 235612136823
BaseRepresentation
bin10001000110100101…
…011111111111110010
31202101211022011202120
4101012211133333302
5300102202322230
612234130255110
71220036212551
oct210645377762
952354264676
1018364104690
117874070728
123686127496
1319687b4749
14c62d29d98
1572732b310
hex44695fff2

18364104690 has 16 divisors (see below), whose sum is σ = 44073851328. Its totient is φ = 4897094576.

The previous prime is 18364104683. The next prime is 18364104691. The reversal of 18364104690 is 9640146381.

It is a super-2 number, since 2×183641046902 (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (18364104691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306068382 + ... + 306068441.

It is an arithmetic number, because the mean of its divisors is an integer number (2754615708).

Almost surely, 218364104690 is an apocalyptic number.

18364104690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18364104690 is an abundant number, since it is smaller than the sum of its proper divisors (25709746638).

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

18364104690 is a wasteful number, since it uses less digits than its factorization.

18364104690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612136833.

The product of its (nonzero) digits is 124416, while the sum is 42.

The spelling of 18364104690 in words is "eighteen billion, three hundred sixty-four million, one hundred four thousand, six hundred ninety".

Divisors: 1 2 3 5 6 10 15 30 612136823 1224273646 1836410469 3060684115 3672820938 6121368230 9182052345 18364104690