3218494957 has 8 divisors (see below), whose sum is σ = 3300123960. Its totient is φ = 3137015040.

The previous prime is 3218494943. The next prime is 3218494967. The reversal of 3218494957 is 7594948123.

It can be written as a sum of positive squares in 4 ways, for example, as 26357956 + 3192137001 = 5134^2 + 56499^2 .

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 3218494957 - 2¹⁵ = 3218462189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3218494967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7113 + ... + 80545.

It is an arithmetic number, because the mean of its divisors is an integer number (412515495).

Almost surely, 2^3218494957 is an apocalyptic number.

It is an amenable number.

3218494957 is a deficient number, since it is larger than the sum of its proper divisors (81629003).

3218494957 is a wasteful number, since it uses less digits than its factorization.

3218494957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74543.

The product of its digits is 2177280, while the sum is 52.

The square root of 3218494957 is about 56731.7808375517. The cubic root of 3218494957 is about 1476.4461476255.

The spelling of 3218494957 in words is "three billion, two hundred eighteen million, four hundred ninety-four thousand, nine hundred fifty-seven".