1349909563 has 2 divisors, whose sum is σ = 1349909564. Its totient is φ = 1349909562.

The previous prime is 1349909507. The next prime is 1349909567. The reversal of 1349909563 is 3659099431.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1349909563 is a prime.

It is not a weakly prime, because it can be changed into another prime (1349909567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 674954781 + 674954782.

It is an arithmetic number, because the mean of its divisors is an integer number (674954782).

Almost surely, 2^1349909563 is an apocalyptic number.

1349909563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1349909563 is an equidigital number, since it uses as much as digits as its factorization.

1349909563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 787320, while the sum is 49.

The square root of 1349909563 is about 36741.1154294477. The cubic root of 1349909563 is about 1105.1847695775.

The spelling of 1349909563 in words is "one billion, three hundred forty-nine million, nine hundred nine thousand, five hundred sixty-three".