1375689920 has 56 divisors (see below), whose sum is σ = 3573676368. Its totient is φ = 500249600.

The previous prime is 1375689901. The next prime is 1375689943. The reversal of 1375689920 is 299865731.

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, 191891 + ... + 198930.

Almost surely, 2^1375689920 is an apocalyptic number.

1375689920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1375689920 is an abundant number, since it is smaller than the sum of its proper divisors (2197986448).

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

1375689920 is a wasteful number, since it uses less digits than its factorization.

1375689920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390849 (or 390839 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 50.

The square root of 1375689920 is about 37090.2941482000. The cubic root of 1375689920 is about 1112.1759982286.

It can be divided in two parts, 1375 and 689920, that multiplied together give a square (948640000 = 30800²).

The spelling of 1375689920 in words is "one billion, three hundred seventy-five million, six hundred eighty-nine thousand, nine hundred twenty".