18303400392 has 32 divisors (see below), whose sum is σ = 45763613280. Its totient is φ = 6100451840.

The previous prime is 18303400369. The next prime is 18303400393. The reversal of 18303400392 is 29300430381.

It is a happy number.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18303400393) 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, 206392 + ... + 281432.

It is an arithmetic number, because the mean of its divisors is an integer number (1430112915).

Almost surely, 2^18303400392 is an apocalyptic number.

18303400392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18303400392 is an abundant number, since it is smaller than the sum of its proper divisors (27460212888).

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

18303400392 is a wasteful number, since it uses less digits than its factorization.

18303400392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85213 (or 85209 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The spelling of 18303400392 in words is "eighteen billion, three hundred three million, four hundred thousand, three hundred ninety-two".