318875438489 has 4 divisors (see below), whose sum is σ = 323366641920. Its totient is φ = 314384235060.

The previous prime is 318875438449. The next prime is 318875438503. The reversal of 318875438489 is 984834578813.

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.

It is a cyclic number.

It is not a de Polignac number, because 318875438489 - 2¹² = 318875434393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (318875438419) 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, 2245601609 + ... + 2245601750.

It is an arithmetic number, because the mean of its divisors is an integer number (80841660480).

Almost surely, 2^318875438489 is an apocalyptic number.

It is an amenable number.

318875438489 is a deficient number, since it is larger than the sum of its proper divisors (4491203431).

318875438489 is an equidigital number, since it uses as much as digits as its factorization.

318875438489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4491203430.

The product of its digits is 185794560, while the sum is 68.

The spelling of 318875438489 in words is "three hundred eighteen billion, eight hundred seventy-five million, four hundred thirty-eight thousand, four hundred eighty-nine".