1377471660 has 48 divisors (see below), whose sum is σ = 3859754976. Its totient is φ = 367055872.

The previous prime is 1377471659. The next prime is 1377471677. The reversal of 1377471660 is 661747731.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81892 + ... + 97268.

It is an arithmetic number, because the mean of its divisors is an integer number (80411562).

Almost surely, 2^1377471660 is an apocalyptic number.

1377471660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1377471660 is an abundant number, since it is smaller than the sum of its proper divisors (2482283316).

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

1377471660 is a wasteful number, since it uses less digits than its factorization.

1377471660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16882 (or 16880 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 42.

The square root of 1377471660 is about 37114.3053282693. The cubic root of 1377471660 is about 1112.6559400984.

The spelling of 1377471660 in words is "one billion, three hundred seventy-seven million, four hundred seventy-one thousand, six hundred sixty".