1379527613 has 4 divisors (see below), whose sum is σ = 1379945340. Its totient is φ = 1379109888.

The previous prime is 1379527607. The next prime is 1379527673. The reversal of 1379527613 is 3167259731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3167259731 = 127 ⋅24939053.

It can be written as a sum of positive squares in 2 ways, for example, as 394697689 + 984829924 = 19867^2 + 31382^2 .

It is a cyclic number.

It is not a de Polignac number, because 1379527613 - 2¹⁸ = 1379265469 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 (1379527673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203870 + ... + 210527.

It is an arithmetic number, because the mean of its divisors is an integer number (344986335).

Almost surely, 2^1379527613 is an apocalyptic number.

It is an amenable number.

1379527613 is a deficient number, since it is larger than the sum of its proper divisors (417727).

1379527613 is an equidigital number, since it uses as much as digits as its factorization.

1379527613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417726.

The product of its digits is 238140, while the sum is 44.

The square root of 1379527613 is about 37141.9925825204. The cubic root of 1379527613 is about 1113.2092318574.

The spelling of 1379527613 in words is "one billion, three hundred seventy-nine million, five hundred twenty-seven thousand, six hundred thirteen".