1387513252 has 12 divisors (see below), whose sum is σ = 2506475776. Its totient is φ = 671377320.

The previous prime is 1387513243. The next prime is 1387513271. The reversal of 1387513252 is 2523157831.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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, 5594688 + ... + 5594935.

Almost surely, 2^1387513252 is an apocalyptic number.

It is an amenable number.

1387513252 is a deficient number, since it is larger than the sum of its proper divisors (1118962524).

1387513252 is a wasteful number, since it uses less digits than its factorization.

1387513252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11189658 (or 11189656 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 1387513252 is about 37249.3389471545. The cubic root of 1387513252 is about 1115.3531031243.

The spelling of 1387513252 in words is "one billion, three hundred eighty-seven million, five hundred thirteen thousand, two hundred fifty-two".