1377763956 has 18 divisors (see below), whose sum is σ = 3482681202. Its totient is φ = 459254640.

The previous prime is 1377763949. The next prime is 1377763973. The reversal of 1377763956 is 6593677731.

It can be written as a sum of positive squares in only one way, i.e., 988096356 + 389667600 = 31434^2 + 19740^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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 5 ways as a sum of consecutive naturals, for example, 19135575 + ... + 19135646.

It is an arithmetic number, because the mean of its divisors is an integer number (193482289).

Almost surely, 2^1377763956 is an apocalyptic number.

It is an amenable number.

1377763956 is an abundant number, since it is smaller than the sum of its proper divisors (2104917246).

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

1377763956 is a wasteful number, since it uses less digits than its factorization.

1377763956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38271231 (or 38271226 counting only the distinct ones).

The product of its digits is 5000940, while the sum is 54.

The square root of 1377763956 is about 37118.2429002236. The cubic root of 1377763956 is about 1112.7346354571.

The spelling of 1377763956 in words is "one billion, three hundred seventy-seven million, seven hundred sixty-three thousand, nine hundred fifty-six".