18900627986 has 8 divisors (see below), whose sum is σ = 29843096880. Its totient is φ = 8952929028.

The previous prime is 18900627961. The next prime is 18900627989. The reversal of 18900627986 is 68972600981.

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

It is not an unprimeable number, because it can be changed into a prime (18900627989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248692436 + ... + 248692511.

It is an arithmetic number, because the mean of its divisors is an integer number (3730387110).

Almost surely, 2^18900627986 is an apocalyptic number.

18900627986 is a deficient number, since it is larger than the sum of its proper divisors (10942468894).

18900627986 is a wasteful number, since it uses less digits than its factorization.

18900627986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497384968.

The product of its (nonzero) digits is 2612736, while the sum is 56.

The spelling of 18900627986 in words is "eighteen billion, nine hundred million, six hundred twenty-seven thousand, nine hundred eighty-six".