613404239839 has 2 divisors, whose sum is σ = 613404239840. Its totient is φ = 613404239838.

The previous prime is 613404239813. The next prime is 613404239869. The reversal of 613404239839 is 938932404316.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 613404239839 - 2³⁷ = 475965286367 is a prime.

It is a super-2 number, since 2×613404239839² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (613404239869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306702119919 + 306702119920.

It is an arithmetic number, because the mean of its divisors is an integer number (306702119920).

Almost surely, 2^613404239839 is an apocalyptic number.

613404239839 is a deficient number, since it is larger than the sum of its proper divisors (1).

613404239839 is an equidigital number, since it uses as much as digits as its factorization.

613404239839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3359232, while the sum is 52.

The spelling of 613404239839 in words is "six hundred thirteen billion, four hundred four million, two hundred thirty-nine thousand, eight hundred thirty-nine".