1613979959929 has 2 divisors, whose sum is σ = 1613979959930. Its totient is φ = 1613979959928.

The previous prime is 1613979959857. The next prime is 1613979959981. The reversal of 1613979959929 is 9299599793161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1323539804304 + 290440155625 = 1150452^2 + 538925^2 .

It is an emirp because it is prime and its reverse (9299599793161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1613979959929 - 2²⁵ = 1613946405497 is a prime.

It is a super-2 number, since 2×1613979959929² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1613979959989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806989979964 + 806989979965.

It is an arithmetic number, because the mean of its divisors is an integer number (806989979965).

Almost surely, 2^{1613979959929} is an apocalyptic number.

It is an amenable number.

1613979959929 is a deficient number, since it is larger than the sum of its proper divisors (1).

1613979959929 is an equidigital number, since it uses as much as digits as its factorization.

1613979959929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 669615660, while the sum is 79.

The spelling of 1613979959929 in words is "one trillion, six hundred thirteen billion, nine hundred seventy-nine million, nine hundred fifty-nine thousand, nine hundred twenty-nine".