1376931845 has 4 divisors (see below), whose sum is σ = 1652318220. Its totient is φ = 1101545472.

The previous prime is 1376931839. The next prime is 1376931859. The reversal of 1376931845 is 5481396731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5481396731 = 23 ⋅238321597.

It can be written as a sum of positive squares in 2 ways, for example, as 822140929 + 554790916 = 28673^2 + 23554^2 .

It is a cyclic number.

It is not a de Polignac number, because 1376931845 - 2²⁰ = 1375883269 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1376931845.

It is a congruent number.

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, 137693180 + ... + 137693189.

It is an arithmetic number, because the mean of its divisors is an integer number (413079555).

Almost surely, 2^1376931845 is an apocalyptic number.

It is an amenable number.

1376931845 is a deficient number, since it is larger than the sum of its proper divisors (275386375).

1376931845 is an equidigital number, since it uses as much as digits as its factorization.

1376931845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275386374.

The product of its digits is 544320, while the sum is 47.

The square root of 1376931845 is about 37107.0322849996. The cubic root of 1376931845 is about 1112.5105755002.

The spelling of 1376931845 in words is "one billion, three hundred seventy-six million, nine hundred thirty-one thousand, eight hundred forty-five".