18304942356 has 24 divisors (see below), whose sum is σ = 47457258240. Its totient is φ = 6101647416.

The previous prime is 18304942351. The next prime is 18304942367. The reversal of 18304942356 is 65324940381.

18304942356 is a `hidden beast` number, since 183 + 0 + 49 + 423 + 5 + 6 = 666.

It is a super-3 number, since 3×18304942356³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18304942351) 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, 84744996 + ... + 84745211.

It is an arithmetic number, because the mean of its divisors is an integer number (1977385760).

Almost surely, 2^18304942356 is an apocalyptic number.

It is an amenable number.

18304942356 is an abundant number, since it is smaller than the sum of its proper divisors (29152315884).

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

18304942356 is a wasteful number, since it uses less digits than its factorization.

18304942356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169490220 (or 169490212 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 18304942356 in words is "eighteen billion, three hundred four million, nine hundred forty-two thousand, three hundred fifty-six".