1377737648 has 20 divisors (see below), whose sum is σ = 3050705040. Its totient is φ = 590458944.

The previous prime is 1377737639. The next prime is 1377737659. The reversal of 1377737648 is 8467377731.

It is a happy number.

It is a super-2 number, since 2×1377737648² = 3796322053433143808, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1377737648.

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, 6150503 + ... + 6150726.

It is an arithmetic number, because the mean of its divisors is an integer number (152535252).

Almost surely, 2^1377737648 is an apocalyptic number.

It is an amenable number.

1377737648 is an abundant number, since it is smaller than the sum of its proper divisors (1672967392).

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

1377737648 is a wasteful number, since it uses less digits than its factorization.

1377737648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12301244 (or 12301238 counting only the distinct ones).

The product of its digits is 4148928, while the sum is 53.

The square root of 1377737648 is about 37117.8885175329. Note that the first 3 decimals coincide. The cubic root of 1377737648 is about 1112.7275529645.

The spelling of 1377737648 in words is "one billion, three hundred seventy-seven million, seven hundred thirty-seven thousand, six hundred forty-eight".