1376318057 has 4 divisors (see below), whose sum is σ = 1376608596. Its totient is φ = 1376027520.

The previous prime is 1376318023. The next prime is 1376318063. The reversal of 1376318057 is 7508136731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7508136731 = 521 ⋅14411011.

It can be written as a sum of positive squares in 2 ways, for example, as 410103001 + 966215056 = 20251^2 + 31084^2 .

It is a cyclic number.

It is not a de Polignac number, because 1376318057 - 2²⁰ = 1375269481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1376318017) 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, 138044 + ... + 147677.

It is an arithmetic number, because the mean of its divisors is an integer number (344152149).

Almost surely, 2^1376318057 is an apocalyptic number.

It is an amenable number.

1376318057 is a deficient number, since it is larger than the sum of its proper divisors (290539).

1376318057 is an equidigital number, since it uses as much as digits as its factorization.

1376318057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290538.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 1376318057 is about 37098.7608553170. The cubic root of 1376318057 is about 1112.3452448458.

The spelling of 1376318057 in words is "one billion, three hundred seventy-six million, three hundred eighteen thousand, fifty-seven".