1377744357 has 12 divisors (see below), whose sum is σ = 2019174080. Its totient is φ = 834996360.

The previous prime is 1377744349. The next prime is 1377744373. The reversal of 1377744357 is 7534477731.

It is not a de Polignac number, because 1377744357 - 2³ = 1377744349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377744337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1897357 + ... + 1898082.

Almost surely, 2^1377744357 is an apocalyptic number.

It is an amenable number.

1377744357 is a deficient number, since it is larger than the sum of its proper divisors (641429723).

1377744357 is a wasteful number, since it uses less digits than its factorization.

1377744357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3795464 (or 3795453 counting only the distinct ones).

The product of its digits is 1728720, while the sum is 48.

The square root of 1377744357 is about 37117.9788916369. The cubic root of 1377744357 is about 1112.7293591326.

The spelling of 1377744357 in words is "one billion, three hundred seventy-seven million, seven hundred forty-four thousand, three hundred fifty-seven".