1377814656 has 64 divisors (see below), whose sum is σ = 3664264320. Its totient is φ = 458714112.

The previous prime is 1377814637. The next prime is 1377814661. The reversal of 1377814656 is 6564187731.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421926 + ... + 425178.

It is an arithmetic number, because the mean of its divisors is an integer number (57254130).

Almost surely, 2^1377814656 is an apocalyptic number.

1377814656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1377814656 is an abundant number, since it is smaller than the sum of its proper divisors (2286449664).

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

1377814656 is a wasteful number, since it uses less digits than its factorization.

1377814656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4373 (or 4361 counting only the distinct ones).

The product of its digits is 846720, while the sum is 48.

The square root of 1377814656 is about 37118.9258465274. The cubic root of 1377814656 is about 1112.7482843733.

The spelling of 1377814656 in words is "one billion, three hundred seventy-seven million, eight hundred fourteen thousand, six hundred fifty-six".