1345285979 has 2 divisors, whose sum is σ = 1345285980. Its totient is φ = 1345285978.

The previous prime is 1345285961. The next prime is 1345286021. The reversal of 1345285979 is 9795825431.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1345285979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1345285979.

It is not a weakly prime, because it can be changed into another prime (1345285079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672642989 + 672642990.

It is an arithmetic number, because the mean of its divisors is an integer number (672642990).

Almost surely, 2^1345285979 is an apocalyptic number.

1345285979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345285979 is an equidigital number, since it uses as much as digits as its factorization.

1345285979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2721600, while the sum is 53.

The square root of 1345285979 is about 36678.1403427164. The cubic root of 1345285979 is about 1103.9215343987.

The spelling of 1345285979 in words is "one billion, three hundred forty-five million, two hundred eighty-five thousand, nine hundred seventy-nine".