1377488864 has 48 divisors (see below), whose sum is σ = 2820348720. Its totient is φ = 661463040.

The previous prime is 1377488807. The next prime is 1377488881. The reversal of 1377488864 is 4688847731.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175259 + ... + 182949.

It is an arithmetic number, because the mean of its divisors is an integer number (58757265).

Almost surely, 2^1377488864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1377488864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1410174360).

1377488864 is an abundant number, since it is smaller than the sum of its proper divisors (1442859856).

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

1377488864 is a wasteful number, since it uses less digits than its factorization.

1377488864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7923 (or 7915 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 56.

The square root of 1377488864 is about 37114.5370980159. The cubic root of 1377488864 is about 1112.6605722694.

The spelling of 1377488864 in words is "one billion, three hundred seventy-seven million, four hundred eighty-eight thousand, eight hundred sixty-four".