1318340379 has 16 divisors (see below), whose sum is σ = 1817256960. Its totient is φ = 849245280.

The previous prime is 1318340371. The next prime is 1318340383. The reversal of 1318340379 is 9730438131.

It is a happy number.

It is not a de Polignac number, because 1318340379 - 2³ = 1318340371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1318340371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52492 + ... + 73430.

It is an arithmetic number, because the mean of its divisors is an integer number (113578560).

Almost surely, 2^1318340379 is an apocalyptic number.

1318340379 is a deficient number, since it is larger than the sum of its proper divisors (498916581).

1318340379 is a wasteful number, since it uses less digits than its factorization.

1318340379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21650.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 1318340379 is about 36308.9572832931. The cubic root of 1318340379 is about 1096.5013853497.

The spelling of 1318340379 in words is "one billion, three hundred eighteen million, three hundred forty thousand, three hundred seventy-nine".