1375855980 has 24 divisors (see below), whose sum is σ = 3852396912. Its totient is φ = 366894912.

The previous prime is 1375855973. The next prime is 1375855997. The reversal of 1375855980 is 895585731.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11465407 + ... + 11465526.

It is an arithmetic number, because the mean of its divisors is an integer number (160516538).

Almost surely, 2^1375855980 is an apocalyptic number.

1375855980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1375855980 is an abundant number, since it is smaller than the sum of its proper divisors (2476540932).

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

1375855980 is a wasteful number, since it uses less digits than its factorization.

1375855980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22930945 (or 22930943 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 51.

The square root of 1375855980 is about 37092.5326716847. The cubic root of 1375855980 is about 1112.2207468096.

The spelling of 1375855980 in words is "one billion, three hundred seventy-five million, eight hundred fifty-five thousand, nine hundred eighty".