318183875978 has 4 divisors (see below), whose sum is σ = 477275813970. Its totient is φ = 159091937988.

The previous prime is 318183875959. The next prime is 318183875993. The reversal of 318183875978 is 879578381813.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 318182861929 + 1014049 = 564077^2 + 1007^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79545968993 + ... + 79545968996.

Almost surely, 2^318183875978 is an apocalyptic number.

318183875978 is a deficient number, since it is larger than the sum of its proper divisors (159091937992).

318183875978 is a wasteful number, since it uses less digits than its factorization.

318183875978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159091937991.

The product of its digits is 81285120, while the sum is 68.

The spelling of 318183875978 in words is "three hundred eighteen billion, one hundred eighty-three million, eight hundred seventy-five thousand, nine hundred seventy-eight".