318395952384409 has 9 divisors (see below), whose sum is σ = 332841566393749. Its totient is φ = 304552257546460.

The previous prime is 318395952384401. The next prime is 318395952384427. The reversal of 318395952384409 is 904483259593813.

The square root of 318395952384409 is 17843653.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 318395952384409 - 2³ = 318395952384401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (318395952384401) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 410016114 + ... + 410791924.

Almost surely, 2^{318395952384409} is an apocalyptic number.

318395952384409 is the 17843653-rd square number.

318395952384409 is the 8921827-th centered octagonal number.

It is an amenable number.

318395952384409 is a deficient number, since it is larger than the sum of its proper divisors (14445614009340).

318395952384409 is an frugal number, since it uses more digits than its factorization.

318395952384409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551668 (or 775834 counting only the distinct ones).

The product of its (nonzero) digits is 1007769600, while the sum is 73.

The spelling of 318395952384409 in words is "three hundred eighteen trillion, three hundred ninety-five billion, nine hundred fifty-two million, three hundred eighty-four thousand, four hundred nine".