18038167966 has 96 divisors (see below), whose sum is σ = 34688715264. Its totient is φ = 6850008000.

The previous prime is 18038167957. The next prime is 18038167969. The reversal of 18038167966 is 66976183081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18038167969) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26409861 + ... + 26410543.

It is an arithmetic number, because the mean of its divisors is an integer number (361340784).

Almost surely, 2^18038167966 is an apocalyptic number.

18038167966 is a deficient number, since it is larger than the sum of its proper divisors (16650547298).

18038167966 is a wasteful number, since it uses less digits than its factorization.

18038167966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918 (or 887 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 18038167966 in words is "eighteen billion, thirty-eight million, one hundred sixty-seven thousand, nine hundred sixty-six".