318956889 has 8 divisors (see below), whose sum is σ = 429486912. Its totient is φ = 210532400.

The previous prime is 318956879. The next prime is 318956903. The reversal of 318956889 is 988659813.

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

It is a cyclic number.

It is not a de Polignac number, because 318956889 - 2¹³ = 318948697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (318956849) 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 7 ways as a sum of consecutive naturals, for example, 526029 + ... + 526634.

It is an arithmetic number, because the mean of its divisors is an integer number (53685864).

Almost surely, 2^318956889 is an apocalyptic number.

It is an amenable number.

318956889 is a deficient number, since it is larger than the sum of its proper divisors (110530023).

318956889 is a wasteful number, since it uses less digits than its factorization.

318956889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052767.

The product of its digits is 3732480, while the sum is 57.

The square root of 318956889 is about 17859.3641824114. The cubic root of 318956889 is about 683.2463635234.

The spelling of 318956889 in words is "three hundred eighteen million, nine hundred fifty-six thousand, eight hundred eighty-nine".