1387312192 has 28 divisors (see below), whose sum is σ = 3146226880. Its totient is φ = 594562176.

The previous prime is 1387312177. The next prime is 1387312193. The reversal of 1387312192 is 2912137831.

It is a tau number, because it is divible by the number of its divisors (28).

It is not an unprimeable number, because it can be changed into a prime (1387312193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1547892 + ... + 1548787.

Almost surely, 2^1387312192 is an apocalyptic number.

It is an amenable number.

1387312192 is an abundant number, since it is smaller than the sum of its proper divisors (1758914688).

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

1387312192 is an equidigital number, since it uses as much as digits as its factorization.

1387312192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3096698 (or 3096688 counting only the distinct ones).

The product of its digits is 18144, while the sum is 37.

The square root of 1387312192 is about 37246.6400095364. The cubic root of 1387312192 is about 1115.2992264671.

The spelling of 1387312192 in words is "one billion, three hundred eighty-seven million, three hundred twelve thousand, one hundred ninety-two".