1377133613 has 4 divisors (see below), whose sum is σ = 1384742268. Its totient is φ = 1369524960.

The previous prime is 1377133561. The next prime is 1377133627. The reversal of 1377133613 is 3163317731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 667550569 + 709583044 = 25837^2 + 26638^2 .

It is a cyclic number.

It is not a de Polignac number, because 1377133613 - 2²⁴ = 1360356397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377133633) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3804056 + ... + 3804417.

It is an arithmetic number, because the mean of its divisors is an integer number (346185567).

Almost surely, 2^1377133613 is an apocalyptic number.

It is an amenable number.

1377133613 is a deficient number, since it is larger than the sum of its proper divisors (7608655).

1377133613 is an equidigital number, since it uses as much as digits as its factorization.

1377133613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7608654.

The product of its digits is 23814, while the sum is 35.

The square root of 1377133613 is about 37109.7509153592. The cubic root of 1377133613 is about 1112.5649132346.

The spelling of 1377133613 in words is "one billion, three hundred seventy-seven million, one hundred thirty-three thousand, six hundred thirteen".