616159899 has 8 divisors (see below), whose sum is σ = 912829520. Its totient is φ = 410773248.

The previous prime is 616159877. The next prime is 616159909. The reversal of 616159899 is 998951616.

616159899 is a `hidden beast` number, since 616 + 15 + 9 + 8 + 9 + 9 = 666.

It is not a de Polignac number, because 616159899 - 2⁵ = 616159867 is a prime.

It is a super-2 number, since 2×616159899² = 759306042271380402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616159099) 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 in 7 ways as a sum of consecutive naturals, for example, 11410342 + ... + 11410395.

It is an arithmetic number, because the mean of its divisors is an integer number (114103690).

Almost surely, 2^616159899 is an apocalyptic number.

616159899 is a deficient number, since it is larger than the sum of its proper divisors (296669621).

616159899 is a wasteful number, since it uses less digits than its factorization.

616159899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22820746 (or 22820740 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 54.

The square root of 616159899 is about 24822.5683401215. The cubic root of 616159899 is about 850.9377880447.

The spelling of 616159899 in words is "six hundred sixteen million, one hundred fifty-nine thousand, eight hundred ninety-nine".