1377473880 has 64 divisors (see below), whose sum is σ = 4157832960. Its totient is φ = 365067648.

The previous prime is 1377473863. The next prime is 1377473891. The reversal of 1377473880 is 883747731.

It is a happy number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 15652 + ... + 54771.

It is an arithmetic number, because the mean of its divisors is an integer number (64966140).

Almost surely, 2^1377473880 is an apocalyptic number.

1377473880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1377473880 is an abundant number, since it is smaller than the sum of its proper divisors (2780359080).

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

1377473880 is a wasteful number, since it uses less digits than its factorization.

1377473880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70600 (or 70596 counting only the distinct ones).

The product of its (nonzero) digits is 790272, while the sum is 48.

The square root of 1377473880 is about 37114.3352358627. The cubic root of 1377473880 is about 1112.6565378348.

The spelling of 1377473880 in words is "one billion, three hundred seventy-seven million, four hundred seventy-three thousand, eight hundred eighty".