1377976642 has 16 divisors (see below), whose sum is σ = 2385182592. Its totient is φ = 584827200.

The previous prime is 1377976637. The next prime is 1377976651. The reversal of 1377976642 is 2466797731.

It is a self number, because there is not a number n which added to its sum of digits gives 1377976642.

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, 476359 + ... + 479242.

It is an arithmetic number, because the mean of its divisors is an integer number (149073912).

Almost surely, 2^1377976642 is an apocalyptic number.

1377976642 is a deficient number, since it is larger than the sum of its proper divisors (1007205950).

1377976642 is a wasteful number, since it uses less digits than its factorization.

1377976642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955713.

The product of its digits is 2667168, while the sum is 52.

The square root of 1377976642 is about 37121.1077690308. The cubic root of 1377976642 is about 1112.7918902820.

The spelling of 1377976642 in words is "one billion, three hundred seventy-seven million, nine hundred seventy-six thousand, six hundred forty-two".