18812461916 has 6 divisors (see below), whose sum is σ = 32921808360. Its totient is φ = 9406230956.

The previous prime is 18812461897. The next prime is 18812461931. The reversal of 18812461916 is 61916421881.

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 as a sum of consecutive naturals, namely, 2351557736 + ... + 2351557743.

It is an arithmetic number, because the mean of its divisors is an integer number (5486968060).

Almost surely, 2^18812461916 is an apocalyptic number.

It is an amenable number.

18812461916 is a deficient number, since it is larger than the sum of its proper divisors (14109346444).

18812461916 is a wasteful number, since it uses less digits than its factorization.

18812461916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4703115483 (or 4703115481 counting only the distinct ones).

The product of its digits is 165888, while the sum is 47.

The spelling of 18812461916 in words is "eighteen billion, eight hundred twelve million, four hundred sixty-one thousand, nine hundred sixteen".