616389516 has 36 divisors (see below), whose sum is σ = 1579446232. Its totient is φ = 202647744.

The previous prime is 616389509. The next prime is 616389533. The reversal of 616389516 is 615983616.

616389516 is a `hidden beast` number, since 6 + 1 + 638 + 9 + 5 + 1 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114646 + ... + 119901.

Almost surely, 2^616389516 is an apocalyptic number.

It is an amenable number.

616389516 is an abundant number, since it is smaller than the sum of its proper divisors (963056716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

616389516 is a wasteful number, since it uses less digits than its factorization.

616389516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234630 (or 234625 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 616389516 is about 24827.1930753358. The cubic root of 616389516 is about 851.0434778806.

The spelling of 616389516 in words is "six hundred sixteen million, three hundred eighty-nine thousand, five hundred sixteen".