1616847613 has 2 divisors, whose sum is σ = 1616847614. Its totient is φ = 1616847612.

The previous prime is 1616847593. The next prime is 1616847641. The reversal of 1616847613 is 3167486161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1590653689 + 26193924 = 39883^2 + 5118^2 .

It is a cyclic number.

It is not a de Polignac number, because 1616847613 - 2¹³ = 1616839421 is a prime.

It is a super-2 number, since 2×1616847613² = 5228392407327595538, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1616847613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1616848613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808423806 + 808423807.

It is an arithmetic number, because the mean of its divisors is an integer number (808423807).

Almost surely, 2^1616847613 is an apocalyptic number.

It is an amenable number.

1616847613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1616847613 is an equidigital number, since it uses as much as digits as its factorization.

1616847613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 43.

The square root of 1616847613 is about 40210.0436831397. The cubic root of 1616847613 is about 1173.6979965792.

The spelling of 1616847613 in words is "one billion, six hundred sixteen million, eight hundred forty-seven thousand, six hundred thirteen".