1373620520 has 32 divisors (see below), whose sum is σ = 3091866120. Its totient is φ = 549231360.

The previous prime is 1373620517. The next prime is 1373620531. The reversal of 1373620520 is 250263731.

It can be written as a sum of positive squares in 4 ways, for example, as 1366189444 + 7431076 = 36962^2 + 2726^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129830 + ... + 140010.

Almost surely, 2^1373620520 is an apocalyptic number.

1373620520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1373620520 is an abundant number, since it is smaller than the sum of its proper divisors (1718245600).

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

1373620520 is a wasteful number, since it uses less digits than its factorization.

1373620520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13565 (or 13561 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 1373620520 is about 37062.3868632337. The cubic root of 1373620520 is about 1111.6180498174.

The spelling of 1373620520 in words is "one billion, three hundred seventy-three million, six hundred twenty thousand, five hundred twenty".