18902994264 has 192 divisors, whose sum is σ = 64027342080. Its totient is φ = 4894560000.

The previous prime is 18902994193. The next prime is 18902994287. The reversal of 18902994264 is 46249920981.

18902994264 is a `hidden beast` number, since 1 + 8 + 90 + 299 + 4 + 264 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 18902994264.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1829914 + ... + 1840214.

It is an arithmetic number, because the mean of its divisors is an integer number (333475740).

Almost surely, 2^18902994264 is an apocalyptic number.

18902994264 is a gapful number since it is divisible by the number (14) 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 18902994264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32013671040).

18902994264 is an abundant number, since it is smaller than the sum of its proper divisors (45124347816).

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

18902994264 is a wasteful number, since it uses less digits than its factorization.

18902994264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10662 (or 10655 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 18902994264 in words is "eighteen billion, nine hundred two million, nine hundred ninety-four thousand, two hundred sixty-four".