1397530637584 has 45 divisors (see below), whose sum is σ = 2717785089157. Its totient is φ = 696176362112.

The previous prime is 1397530637563. The next prime is 1397530637593. The reversal of 1397530637584 is 4857360357931.

The square root of 1397530637584 is 1182172.

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

It can be written as a sum of positive squares in only one way, i.e., 40473392400 + 1357057245184 = 201180^2 + 1164928^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2265041244 + ... + 2265041860.

Almost surely, 2^{1397530637584} is an apocalyptic number.

1397530637584 is the 1182172-nd square number.

It is an amenable number.

1397530637584 is a deficient number, since it is larger than the sum of its proper divisors (1320254451573).

1397530637584 is an frugal number, since it uses more digits than its factorization.

1397530637584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2200 (or 1098 counting only the distinct ones).

The product of its (nonzero) digits is 57153600, while the sum is 61.

The spelling of 1397530637584 in words is "one trillion, three hundred ninety-seven billion, five hundred thirty million, six hundred thirty-seven thousand, five hundred eighty-four".