1377131642 has 8 divisors (see below), whose sum is σ = 2136928500. Its totient is φ = 664822144.

The previous prime is 1377131633. The next prime is 1377131653. The reversal of 1377131642 is 2461317731.

It can be written as a sum of positive squares in 2 ways, for example, as 1205547841 + 171583801 = 34721^2 + 13099^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 11871767 + ... + 11871882.

Almost surely, 2^1377131642 is an apocalyptic number.

1377131642 is a deficient number, since it is larger than the sum of its proper divisors (759796858).

1377131642 is a wasteful number, since it uses less digits than its factorization.

1377131642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23743680.

The product of its digits is 21168, while the sum is 35.

The square root of 1377131642 is about 37109.7243589871. The cubic root of 1377131642 is about 1112.5643824542.

The spelling of 1377131642 in words is "one billion, three hundred seventy-seven million, one hundred thirty-one thousand, six hundred forty-two".