1387396608 has 80 divisors (see below), whose sum is σ = 3980484816. Its totient is φ = 426885120.

The previous prime is 1387396589. The next prime is 1387396643. The reversal of 1387396608 is 8066937831.

It is a congruent number.

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, 14773 + ... + 54708.

Almost surely, 2^1387396608 is an apocalyptic number.

It is an amenable number.

1387396608 is an abundant number, since it is smaller than the sum of its proper divisors (2593088208).

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

1387396608 is an equidigital number, since it uses as much as digits as its factorization.

1387396608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69515 (or 69499 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 51.

The square root of 1387396608 is about 37247.7731951858. The cubic root of 1387396608 is about 1115.3218474725.

The spelling of 1387396608 in words is "one billion, three hundred eighty-seven million, three hundred ninety-six thousand, six hundred eight".