1239304613 has 2 divisors, whose sum is σ = 1239304614. Its totient is φ = 1239304612.

The previous prime is 1239304579. The next prime is 1239304637. The reversal of 1239304613 is 3164039321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 625900324 + 613404289 = 25018^2 + 24767^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1239304613 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1239304613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1239304513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 619652306 + 619652307.

It is an arithmetic number, because the mean of its divisors is an integer number (619652307).

Almost surely, 2^1239304613 is an apocalyptic number.

It is an amenable number.

1239304613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1239304613 is an equidigital number, since it uses as much as digits as its factorization.

1239304613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 1239304613 is about 35203.7585067277. The cubic root of 1239304613 is about 1074.1362054703.

The spelling of 1239304613 in words is "one billion, two hundred thirty-nine million, three hundred four thousand, six hundred thirteen".