318854433513 has 24 divisors (see below), whose sum is σ = 539508803040. Its totient is φ = 165638665920.

The previous prime is 318854433487. The next prime is 318854433517. The reversal of 318854433513 is 315334458813.

It is not a de Polignac number, because 318854433513 - 2¹⁰ = 318854432489 is a prime.

It is a super-2 number, since 2×318854433513² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (318854433517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98592828 + ... + 98596061.

It is an arithmetic number, because the mean of its divisors is an integer number (22479533460).

Almost surely, 2^318854433513 is an apocalyptic number.

318854433513 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

318854433513 is a deficient number, since it is larger than the sum of its proper divisors (220654369527).

318854433513 is a wasteful number, since it uses less digits than its factorization.

318854433513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197188917 (or 197188910 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 48.

The spelling of 318854433513 in words is "three hundred eighteen billion, eight hundred fifty-four million, four hundred thirty-three thousand, five hundred thirteen".