18408890876 has 6 divisors (see below), whose sum is σ = 32215559040. Its totient is φ = 9204445436.

The previous prime is 18408890873. The next prime is 18408890987. The reversal of 18408890876 is 67809880481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18408890873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2301111356 + ... + 2301111363.

It is an arithmetic number, because the mean of its divisors is an integer number (5369259840).

Almost surely, 2^18408890876 is an apocalyptic number.

It is an amenable number.

18408890876 is a deficient number, since it is larger than the sum of its proper divisors (13806668164).

18408890876 is a wasteful number, since it uses less digits than its factorization.

18408890876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4602222723 (or 4602222721 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 59.

The spelling of 18408890876 in words is "eighteen billion, four hundred eight million, eight hundred ninety thousand, eight hundred seventy-six".