18886661045 has 16 divisors (see below), whose sum is σ = 25955804160. Its totient is φ = 12923804544.

The previous prime is 18886661033. The next prime is 18886661047. The reversal of 18886661045 is 54016668881.

It is not a de Polignac number, because 18886661045 - 2⁸ = 18886660789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18886661047) 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, 546512 + ... + 580041.

It is an arithmetic number, because the mean of its divisors is an integer number (1622237760).

Almost surely, 2^18886661045 is an apocalyptic number.

It is an amenable number.

18886661045 is a deficient number, since it is larger than the sum of its proper divisors (7069143115).

18886661045 is a wasteful number, since it uses less digits than its factorization.

18886661045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127044.

The product of its (nonzero) digits is 2211840, while the sum is 53.

The spelling of 18886661045 in words is "eighteen billion, eight hundred eighty-six million, six hundred sixty-one thousand, forty-five".