1315974379 has 4 divisors (see below), whose sum is σ = 1331829576. Its totient is φ = 1300119184.

The previous prime is 1315974367. The next prime is 1315974433. The reversal of 1315974379 is 9734795131.

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

It is a cyclic number.

It is not a de Polignac number, because 1315974379 - 2¹¹ = 1315972331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1315974329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7927474 + ... + 7927639.

It is an arithmetic number, because the mean of its divisors is an integer number (332957394).

Almost surely, 2^1315974379 is an apocalyptic number.

1315974379 is a deficient number, since it is larger than the sum of its proper divisors (15855197).

1315974379 is an equidigital number, since it uses as much as digits as its factorization.

1315974379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15855196.

The product of its digits is 714420, while the sum is 49.

The square root of 1315974379 is about 36276.3611598517. The cubic root of 1315974379 is about 1095.8450359320.

The spelling of 1315974379 in words is "one billion, three hundred fifteen million, nine hundred seventy-four thousand, three hundred seventy-nine".