1387872488 has 64 divisors (see below), whose sum is σ = 2753730000. Its totient is φ = 654796800.

The previous prime is 1387872481. The next prime is 1387872491. The reversal of 1387872488 is 8842787831.

It can be written as a sum of positive squares in 8 ways, for example, as 585736804 + 802135684 = 24202^2 + 28322^2 .

It is not an unprimeable number, because it can be changed into a prime (1387872481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3976538 + ... + 3976886.

Almost surely, 2^1387872488 is an apocalyptic number.

It is an amenable number.

1387872488 is a deficient number, since it is larger than the sum of its proper divisors (1365857512).

1387872488 is a wasteful number, since it uses less digits than its factorization.

1387872488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726 (or 722 counting only the distinct ones).

The product of its digits is 4816896, while the sum is 56.

The square root of 1387872488 is about 37254.1606803858. The cubic root of 1387872488 is about 1115.4493521542.

The spelling of 1387872488 in words is "one billion, three hundred eighty-seven million, eight hundred seventy-two thousand, four hundred eighty-eight".