18600378979 has 48 divisors (see below), whose sum is σ = 24035708928. Its totient is φ = 14258680128.

The previous prime is 18600378971. The next prime is 18600379001. The reversal of 18600378979 is 97987300681.

It is not a de Polignac number, because 18600378979 - 2³ = 18600378971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18600378971) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3475984 + ... + 3481330.

It is an arithmetic number, because the mean of its divisors is an integer number (500743936).

Almost surely, 2^18600378979 is an apocalyptic number.

18600378979 is a deficient number, since it is larger than the sum of its proper divisors (5435329949).

18600378979 is a wasteful number, since it uses less digits than its factorization.

18600378979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5544 (or 5537 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 58.

The spelling of 18600378979 in words is "eighteen billion, six hundred million, three hundred seventy-eight thousand, nine hundred seventy-nine".