1377435664 has 20 divisors (see below), whose sum is σ = 2911398480. Its totient is φ = 626107040.

The previous prime is 1377435629. The next prime is 1377435671. The reversal of 1377435664 is 4665347731.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3912994 + ... + 3913345.

It is an arithmetic number, because the mean of its divisors is an integer number (145569924).

Almost surely, 2^1377435664 is an apocalyptic number.

It is an amenable number.

1377435664 is an abundant number, since it is smaller than the sum of its proper divisors (1533962816).

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

1377435664 is a wasteful number, since it uses less digits than its factorization.

1377435664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7826358 (or 7826352 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 46.

The square root of 1377435664 is about 37113.8203907924. The cubic root of 1377435664 is about 1112.6462480630.

The spelling of 1377435664 in words is "one billion, three hundred seventy-seven million, four hundred thirty-five thousand, six hundred sixty-four".