318768089 has 4 divisors (see below), whose sum is σ = 318916560. Its totient is φ = 318619620.

The previous prime is 318768083. The next prime is 318768137. The reversal of 318768089 is 980867813.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 980867813 = 16183 ⋅60611.

It is a cyclic number.

It is not a de Polignac number, because 318768089 - 2²⁰ = 317719513 is a prime.

It is a super-2 number, since 2×318768089² = 203226189129423842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (318768083) 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, 70967 + ... + 75324.

It is an arithmetic number, because the mean of its divisors is an integer number (79729140).

Almost surely, 2^318768089 is an apocalyptic number.

It is an amenable number.

318768089 is a deficient number, since it is larger than the sum of its proper divisors (148471).

318768089 is a wasteful number, since it uses less digits than its factorization.

318768089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148470.

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 318768089 is about 17854.0776574989. The cubic root of 318768089 is about 683.1115256831. Note that the first 3 decimals are identical.

The spelling of 318768089 in words is "three hundred eighteen million, seven hundred sixty-eight thousand, eighty-nine".