18888866157 has 16 divisors (see below), whose sum is σ = 28786015872. Its totient is φ = 10792519680.

The previous prime is 18888866111. The next prime is 18888866261. The reversal of 18888866157 is 75166888881.

It is not a de Polignac number, because 18888866157 - 2¹⁵ = 18888833389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18888846157) 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, 188557 + ... + 270797.

It is an arithmetic number, because the mean of its divisors is an integer number (1799125992).

Almost surely, 2^18888866157 is an apocalyptic number.

It is an amenable number.

18888866157 is a deficient number, since it is larger than the sum of its proper divisors (9897149715).

18888866157 is a wasteful number, since it uses less digits than its factorization.

18888866157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93188.

The product of its digits is 41287680, while the sum is 66.

The spelling of 18888866157 in words is "eighteen billion, eight hundred eighty-eight million, eight hundred sixty-six thousand, one hundred fifty-seven".