318387090564 has 81 divisors (see below), whose sum is σ = 811325115237. Its totient is φ = 105277000608.

The previous prime is 318387090559. The next prime is 318387090577. The reversal of 318387090564 is 465090783813.

The square root of 318387090564 is 564258.

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

318387090564 is a `hidden beast` number, since 3 + 1 + 8 + 3 + 8 + 70 + 9 + 0 + 564 = 666.

It can be written as a sum of positive squares in only one way, i.e., 93324140100 + 225062950464 = 305490^2 + 474408^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 318387090564.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 531530737 + ... + 531531335.

Almost surely, 2^318387090564 is an apocalyptic number.

318387090564 is the 564258-th square number.

It is an amenable number.

318387090564 is an abundant number, since it is smaller than the sum of its proper divisors (492938024673).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

318387090564 is an equidigital number, since it uses as much as digits as its factorization.

318387090564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522 (or 761 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 318387090564 in words is "three hundred eighteen billion, three hundred eighty-seven million, ninety thousand, five hundred sixty-four".