1387687708 has 24 divisors (see below), whose sum is σ = 2673990144. Its totient is φ = 624870000.

The previous prime is 1387687673. The next prime is 1387687739. The reversal of 1387687708 is 8077867831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142668 + ... + 152083.

It is an arithmetic number, because the mean of its divisors is an integer number (111416256).

Almost surely, 2^1387687708 is an apocalyptic number.

It is an amenable number.

1387687708 is a deficient number, since it is larger than the sum of its proper divisors (1286302436).

1387687708 is a wasteful number, since it uses less digits than its factorization.

1387687708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294873 (or 294871 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 55.

The square root of 1387687708 is about 37251.6806063834. The cubic root of 1387687708 is about 1115.3998466747.

The spelling of 1387687708 in words is "one billion, three hundred eighty-seven million, six hundred eighty-seven thousand, seven hundred eight".