18746291864 has 32 divisors (see below), whose sum is σ = 36686895840. Its totient is φ = 8963328000.

The previous prime is 18746291857. The next prime is 18746291891. The reversal of 18746291864 is 46819264781.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 872774 + ... + 893994.

It is an arithmetic number, because the mean of its divisors is an integer number (1146465495).

Almost surely, 2^18746291864 is an apocalyptic number.

It is an amenable number.

18746291864 is a deficient number, since it is larger than the sum of its proper divisors (17940603976).

18746291864 is a wasteful number, since it uses less digits than its factorization.

18746291864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26051 (or 26047 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 56.

The spelling of 18746291864 in words is "eighteen billion, seven hundred forty-six million, two hundred ninety-one thousand, eight hundred sixty-four".