18740279932 has 48 divisors (see below), whose sum is σ = 36111043584. Its totient is φ = 8438976000.

The previous prime is 18740279903. The next prime is 18740279933. The reversal of 18740279932 is 23997204781.

It is a self number, because there is not a number n which added to its sum of digits gives 18740279932.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18740279933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3876757 + ... + 3881587.

It is an arithmetic number, because the mean of its divisors is an integer number (752313408).

Almost surely, 2^18740279932 is an apocalyptic number.

It is an amenable number.

18740279932 is a deficient number, since it is larger than the sum of its proper divisors (17370763652).

18740279932 is a wasteful number, since it uses less digits than its factorization.

18740279932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5650 (or 5648 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 52.

The spelling of 18740279932 in words is "eighteen billion, seven hundred forty million, two hundred seventy-nine thousand, nine hundred thirty-two".