1377811328 has 32 divisors (see below), whose sum is σ = 2819053560. Its totient is φ = 670284288.

The previous prime is 1377811301. The next prime is 1377811333. The reversal of 1377811328 is 8231187731.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140726 + ... + 150197.

Almost surely, 2^1377811328 is an apocalyptic number.

It is an amenable number.

1377811328 is an abundant number, since it is smaller than the sum of its proper divisors (1441242232).

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

1377811328 is an equidigital number, since it uses as much as digits as its factorization.

1377811328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290974 (or 290962 counting only the distinct ones).

The product of its digits is 56448, while the sum is 41.

The square root of 1377811328 is about 37118.8810176169. The cubic root of 1377811328 is about 1112.7473884547.

The spelling of 1377811328 in words is "one billion, three hundred seventy-seven million, eight hundred eleven thousand, three hundred twenty-eight".