18977325886 has 8 divisors (see below), whose sum is σ = 28467423000. Its totient is φ = 9488184888.

The previous prime is 18977325853. The next prime is 18977325889. The reversal of 18977325886 is 68852377981.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18977325889) 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, 187156 + ... + 270151.

It is an arithmetic number, because the mean of its divisors is an integer number (3558427875).

Almost surely, 2^18977325886 is an apocalyptic number.

18977325886 is a deficient number, since it is larger than the sum of its proper divisors (9490097114).

18977325886 is a wasteful number, since it uses less digits than its factorization.

18977325886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478058.

The product of its digits is 40642560, while the sum is 64.

The spelling of 18977325886 in words is "eighteen billion, nine hundred seventy-seven million, three hundred twenty-five thousand, eight hundred eighty-six".