1379825315 has 96 divisors (see below), whose sum is σ = 2123573760. Its totient is φ = 853079040.

The previous prime is 1379825311. The next prime is 1379825327. The reversal of 1379825315 is 5135289731.

It is a Cunningham number, because it is equal to 37146²-1.

It is not a de Polignac number, because 1379825315 - 2² = 1379825311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1379825311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4494392 + ... + 4494698.

It is an arithmetic number, because the mean of its divisors is an integer number (22120560).

Almost surely, 2^1379825315 is an apocalyptic number.

1379825315 is a deficient number, since it is larger than the sum of its proper divisors (743748445).

1379825315 is a wasteful number, since it uses less digits than its factorization.

With its successor (1379825316) it forms an eRAP, since the sums of their prime factors are consecutive (393 and 394).

1379825315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393 (or 382 counting only the distinct ones).

The product of its digits is 226800, while the sum is 44.

The square root of 1379825315 is about 37145.9999865396. Note that the first 4 decimals coincide. The cubic root of 1379825315 is about 1113.2893029328.

The spelling of 1379825315 in words is "one billion, three hundred seventy-nine million, eight hundred twenty-five thousand, three hundred fifteen".