18858437012 has 12 divisors (see below), whose sum is σ = 34437146016. Its totient is φ = 9019252440.

The previous prime is 18858437009. The next prime is 18858437033. The reversal of 18858437012 is 21073485881.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102491414 + ... + 102491597.

It is an arithmetic number, because the mean of its divisors is an integer number (2869762168).

Almost surely, 2^18858437012 is an apocalyptic number.

It is an amenable number.

18858437012 is a deficient number, since it is larger than the sum of its proper divisors (15578709004).

18858437012 is a wasteful number, since it uses less digits than its factorization.

18858437012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204983038 (or 204983036 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 47.

The spelling of 18858437012 in words is "eighteen billion, eight hundred fifty-eight million, four hundred thirty-seven thousand, twelve".