18033961392 has 160 divisors (see below), whose sum is σ = 52415692800. Its totient is φ = 5936136192.

The previous prime is 18033961381. The next prime is 18033961411. The reversal of 18033961392 is 29316933081.

18033961392 is a `hidden beast` number, since 180 + 339 + 6 + 139 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14099409 + ... + 14100687.

It is an arithmetic number, because the mean of its divisors is an integer number (327598080).

Almost surely, 2^18033961392 is an apocalyptic number.

18033961392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18033961392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26207846400).

18033961392 is an abundant number, since it is smaller than the sum of its proper divisors (34381731408).

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

18033961392 is a wasteful number, since it uses less digits than its factorization.

18033961392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680 (or 1668 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The spelling of 18033961392 in words is "eighteen billion, thirty-three million, nine hundred sixty-one thousand, three hundred ninety-two".