1346815979 has 2 divisors, whose sum is σ = 1346815980. Its totient is φ = 1346815978.

The previous prime is 1346815933. The next prime is 1346816033. The reversal of 1346815979 is 9795186431.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1346815979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1346815979.

It is not a weakly prime, because it can be changed into another prime (1346812979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 673407989 + 673407990.

It is an arithmetic number, because the mean of its divisors is an integer number (673407990).

Almost surely, 2^1346815979 is an apocalyptic number.

1346815979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1346815979 is an equidigital number, since it uses as much as digits as its factorization.

1346815979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 53.

The square root of 1346815979 is about 36698.9915256537. The cubic root of 1346815979 is about 1104.3398742104.

The spelling of 1346815979 in words is "one billion, three hundred forty-six million, eight hundred fifteen thousand, nine hundred seventy-nine".