1345186613 has 2 divisors, whose sum is σ = 1345186614. Its totient is φ = 1345186612.

The previous prime is 1345186553. The next prime is 1345186639. The reversal of 1345186613 is 3166815431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1311743524 + 33443089 = 36218^2 + 5783^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345186613 - 2²⁸ = 1076751157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1345186313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672593306 + 672593307.

It is an arithmetic number, because the mean of its divisors is an integer number (672593307).

Almost surely, 2^1345186613 is an apocalyptic number.

It is an amenable number.

1345186613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345186613 is an equidigital number, since it uses as much as digits as its factorization.

1345186613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 38.

The square root of 1345186613 is about 36676.7857506625. The cubic root of 1345186613 is about 1103.8943543121.

The spelling of 1345186613 in words is "one billion, three hundred forty-five million, one hundred eighty-six thousand, six hundred thirteen".