1616889608 has 16 divisors (see below), whose sum is σ = 3061686060. Its totient is φ = 800440000.

The previous prime is 1616889553. The next prime is 1616889613. The reversal of 1616889608 is 8069886161.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1614271684 + 2617924 = 40178^2 + 1618^2 .

It is a super-2 number, since 2×1616889608² = 5228664008916787328, 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 1616889608.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 999743 + ... + 1001358.

Almost surely, 2^1616889608 is an apocalyptic number.

It is an amenable number.

1616889608 is a deficient number, since it is larger than the sum of its proper divisors (1444796452).

1616889608 is a wasteful number, since it uses less digits than its factorization.

1616889608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001208 (or 2001204 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 53.

The square root of 1616889608 is about 40210.5658751528. The cubic root of 1616889608 is about 1173.7081581266.

The spelling of 1616889608 in words is "one billion, six hundred sixteen million, eight hundred eighty-nine thousand, six hundred eight".