1377263864 has 8 divisors (see below), whose sum is σ = 2582369760. Its totient is φ = 688631928.

The previous prime is 1377263843. The next prime is 1377263869. The reversal of 1377263864 is 4683627731.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377263869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86078984 + ... + 86078999.

It is an arithmetic number, because the mean of its divisors is an integer number (322796220).

Almost surely, 2^1377263864 is an apocalyptic number.

It is an amenable number.

1377263864 is a deficient number, since it is larger than the sum of its proper divisors (1205105896).

1377263864 is a wasteful number, since it uses less digits than its factorization.

1377263864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172157989 (or 172157985 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 47.

The square root of 1377263864 is about 37111.5058169296. The cubic root of 1377263864 is about 1112.5999880505.

The spelling of 1377263864 in words is "one billion, three hundred seventy-seven million, two hundred sixty-three thousand, eight hundred sixty-four".