1377768956 has 6 divisors (see below), whose sum is σ = 2411095680. Its totient is φ = 688884476.

The previous prime is 1377768941. The next prime is 1377768967. The reversal of 1377768956 is 6598677731.

It is a super-2 number, since 2×1377768956² = 3796494592234659872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1377768895 and 1377768904.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172221116 + ... + 172221123.

It is an arithmetic number, because the mean of its divisors is an integer number (401849280).

Almost surely, 2^1377768956 is an apocalyptic number.

It is an amenable number.

1377768956 is a deficient number, since it is larger than the sum of its proper divisors (1033326724).

1377768956 is a wasteful number, since it uses less digits than its factorization.

1377768956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344442243 (or 344442241 counting only the distinct ones).

The product of its digits is 13335840, while the sum is 59.

The square root of 1377768956 is about 37118.3102524886. The cubic root of 1377768956 is about 1112.7359815190.

The spelling of 1377768956 in words is "one billion, three hundred seventy-seven million, seven hundred sixty-eight thousand, nine hundred fifty-six".