1377658856 has 16 divisors (see below), whose sum is σ = 2952126240. Its totient is φ = 590425200.

The previous prime is 1377658813. The next prime is 1377658921. The reversal of 1377658856 is 6588567731.

It is a Harshad number since it is a multiple of its sum of digits (56), and also a Moran number because the ratio is a prime number: 24601051 = 1377658856 / (1 + 3 + 7 + 7 + 6 + 5 + 8 + 8 + 5 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12300470 + ... + 12300581.

It is an arithmetic number, because the mean of its divisors is an integer number (184507890).

Almost surely, 2^1377658856 is an apocalyptic number.

It is an amenable number.

1377658856 is an abundant number, since it is smaller than the sum of its proper divisors (1574467384).

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

1377658856 is a wasteful number, since it uses less digits than its factorization.

1377658856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24601064 (or 24601060 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 56.

The square root of 1377658856 is about 37116.8271273287. The cubic root of 1377658856 is about 1112.7063404836.

The spelling of 1377658856 in words is "one billion, three hundred seventy-seven million, six hundred fifty-eight thousand, eight hundred fifty-six".