1377889256 has 8 divisors (see below), whose sum is σ = 2583542370. Its totient is φ = 688944624.

The previous prime is 1377889243. The next prime is 1377889259. The reversal of 1377889256 is 6529887731.

It can be written as a sum of positive squares in only one way, i.e., 1171966756 + 205922500 = 34234^2 + 14350^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1377889259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86118071 + ... + 86118086.

Almost surely, 2^1377889256 is an apocalyptic number.

It is an amenable number.

1377889256 is a deficient number, since it is larger than the sum of its proper divisors (1205653114).

1377889256 is a wasteful number, since it uses less digits than its factorization.

1377889256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172236163 (or 172236159 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 56.

The square root of 1377889256 is about 37119.9307111422. The cubic root of 1377889256 is about 1112.7683667851.

The spelling of 1377889256 in words is "one billion, three hundred seventy-seven million, eight hundred eighty-nine thousand, two hundred fifty-six".