1340013379 has 2 divisors, whose sum is σ = 1340013380. Its totient is φ = 1340013378.

The previous prime is 1340013377. The next prime is 1340013397. The reversal of 1340013379 is 9733100431.

Together with next prime (1340013397) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1340013379 - 2¹ = 1340013377 is a prime.

Together with 1340013377, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1340013379.

It is not a weakly prime, because it can be changed into another prime (1340013377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670006689 + 670006690.

It is an arithmetic number, because the mean of its divisors is an integer number (670006690).

Almost surely, 2^1340013379 is an apocalyptic number.

1340013379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340013379 is an equidigital number, since it uses as much as digits as its factorization.

1340013379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 1340013379 is about 36606.1931782041. The cubic root of 1340013379 is about 1102.4774405909.

The spelling of 1340013379 in words is "one billion, three hundred forty million, thirteen thousand, three hundred seventy-nine".