18304232472 has 64 divisors (see below), whose sum is σ = 52485273600. Its totient is φ = 5904588960.

The previous prime is 18304232417. The next prime is 18304232473. The reversal of 18304232472 is 27423240381.

It is a happy number.

18304232472 is a `hidden beast` number, since 183 + 0 + 4 + 2 + 3 + 2 + 472 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18304232473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1360108 + ... + 1373499.

It is an arithmetic number, because the mean of its divisors is an integer number (820082400).

Almost surely, 2^18304232472 is an apocalyptic number.

18304232472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18304232472 is an abundant number, since it is smaller than the sum of its proper divisors (34181041128).

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

18304232472 is a wasteful number, since it uses less digits than its factorization.

18304232472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2733653 (or 2733643 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The spelling of 18304232472 in words is "eighteen billion, three hundred four million, two hundred thirty-two thousand, four hundred seventy-two".