18898790401 has 16 divisors (see below), whose sum is σ = 21155731200. Its totient is φ = 16777283328.

The previous prime is 18898790359. The next prime is 18898790411. The reversal of 18898790401 is 10409789881.

It is a de Polignac number, because none of the positive numbers 2^k-18898790401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18898790411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53785 + ... + 201718.

It is an arithmetic number, because the mean of its divisors is an integer number (1322233200).

Almost surely, 2^18898790401 is an apocalyptic number.

It is an amenable number.

18898790401 is a deficient number, since it is larger than the sum of its proper divisors (2256940799).

18898790401 is a wasteful number, since it uses less digits than its factorization.

18898790401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255768.

The product of its (nonzero) digits is 1161216, while the sum is 55.

The spelling of 18898790401 in words is "eighteen billion, eight hundred ninety-eight million, seven hundred ninety thousand, four hundred one".