3218341957 has 8 divisors (see below), whose sum is σ = 3251971800. Its totient is φ = 3184786944.

The previous prime is 3218341943. The next prime is 3218341969. The reversal of 3218341957 is 7591438123.

It can be written as a sum of positive squares in 4 ways, for example, as 2507906241 + 710435716 = 50079^2 + 26654^2 .

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 3218341957 - 2²⁷ = 3084124229 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 (3218341057) 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, 69933 + ... + 106429.

It is an arithmetic number, because the mean of its divisors is an integer number (406496475).

Almost surely, 2^3218341957 is an apocalyptic number.

It is an amenable number.

3218341957 is a deficient number, since it is larger than the sum of its proper divisors (33629843).

3218341957 is a wasteful number, since it uses less digits than its factorization.

3218341957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37415.

The product of its digits is 181440, while the sum is 43.

The square root of 3218341957 is about 56730.4323709947. The cubic root of 3218341957 is about 1476.4227516134.

The spelling of 3218341957 in words is "three billion, two hundred eighteen million, three hundred forty-one thousand, nine hundred fifty-seven".