1387788875 has 16 divisors (see below), whose sum is σ = 1889413344. Its totient is φ = 1009300000.

The previous prime is 1387788851. The next prime is 1387788887. The reversal of 1387788875 is 5788877831.

It is not a de Polignac number, because 1387788875 - 2¹² = 1387784779 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 503276 + ... + 506025.

It is an arithmetic number, because the mean of its divisors is an integer number (118088334).

Almost surely, 2^1387788875 is an apocalyptic number.

1387788875 is a deficient number, since it is larger than the sum of its proper divisors (501624469).

1387788875 is a wasteful number, since it uses less digits than its factorization.

1387788875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009327 (or 1009317 counting only the distinct ones).

The product of its digits is 21073920, while the sum is 62.

The square root of 1387788875 is about 37253.0384666808. The cubic root of 1387788875 is about 1115.4269514556.

The spelling of 1387788875 in words is "one billion, three hundred eighty-seven million, seven hundred eighty-eight thousand, eight hundred seventy-five".