1377627640 has 32 divisors (see below), whose sum is σ = 3281996880. Its totient is φ = 518636032.

The previous prime is 1377627617. The next prime is 1377627653. The reversal of 1377627640 is 467267731.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1012282 + ... + 1013641.

Almost surely, 2^1377627640 is an apocalyptic number.

1377627640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1377627640 is an abundant number, since it is smaller than the sum of its proper divisors (1904369240).

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

1377627640 is a wasteful number, since it uses less digits than its factorization.

1377627640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025951 (or 2025947 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 43.

The square root of 1377627640 is about 37116.4066148651. The cubic root of 1377627640 is about 1112.6979362493.

The spelling of 1377627640 in words is "one billion, three hundred seventy-seven million, six hundred twenty-seven thousand, six hundred forty".