1397502152 has 16 divisors (see below), whose sum is σ = 2622494940. Its totient is φ = 698170176.

The previous prime is 1397502137. The next prime is 1397502181. The reversal of 1397502152 is 2512057931.

It can be written as a sum of positive squares in 2 ways, for example, as 1187078116 + 210424036 = 34454^2 + 14506^2 .

It is a super-2 number, since 2×1397502152² = 3906024529689262208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62303 + ... + 81710.

Almost surely, 2^1397502152 is an apocalyptic number.

It is an amenable number.

1397502152 is a deficient number, since it is larger than the sum of its proper divisors (1224992788).

1397502152 is a wasteful number, since it uses less digits than its factorization.

1397502152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145232 (or 145228 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 1397502152 is about 37383.1800680466. The cubic root of 1397502152 is about 1118.0232329298.

The spelling of 1397502152 in words is "one billion, three hundred ninety-seven million, five hundred two thousand, one hundred fifty-two".