18872677087 has 16 divisors (see below), whose sum is σ = 21148065792. Its totient is φ = 16694794720.

The previous prime is 18872677051. The next prime is 18872677099. The reversal of 18872677087 is 78077627881.

It is a cyclic number.

It is not a de Polignac number, because 18872677087 - 2⁷ = 18872676959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18872677787) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 16063 + ... + 194944.

It is an arithmetic number, because the mean of its divisors is an integer number (1321754112).

Almost surely, 2^18872677087 is an apocalyptic number.

18872677087 is a deficient number, since it is larger than the sum of its proper divisors (2275388705).

18872677087 is a wasteful number, since it uses less digits than its factorization.

18872677087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211238.

The product of its (nonzero) digits is 14751744, while the sum is 61.

The spelling of 18872677087 in words is "eighteen billion, eight hundred seventy-two million, six hundred seventy-seven thousand, eighty-seven".