18987045076 has 12 divisors (see below), whose sum is σ = 33230669472. Its totient is φ = 9492568088.

The previous prime is 18987045073. The next prime is 18987045079. The reversal of 18987045076 is 67054078981.

It is an interprime number because it is at equal distance from previous prime (18987045073) and next prime (18987045079).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18987045073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192880 + ... + 274183.

It is an arithmetic number, because the mean of its divisors is an integer number (2769222456).

Almost surely, 2^18987045076 is an apocalyptic number.

It is an amenable number.

18987045076 is a deficient number, since it is larger than the sum of its proper divisors (14243624396).

18987045076 is a wasteful number, since it uses less digits than its factorization.

18987045076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477230 (or 477228 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 55.

The spelling of 18987045076 in words is "eighteen billion, nine hundred eighty-seven million, forty-five thousand, seventy-six".