1616616172 has 12 divisors (see below), whose sum is σ = 2830051336. Its totient is φ = 808030080.

The previous prime is 1616616163. The next prime is 1616616181. The reversal of 1616616172 is 2716166161.

It is an interprime number because it is at equal distance from previous prime (1616616163) and next prime (1616616181).

It is a super-2 number, since 2×1616616172² = 5226895695143867168, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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, 56133 + ... + 79900.

Almost surely, 2^1616616172 is an apocalyptic number.

It is an amenable number.

1616616172 is a deficient number, since it is larger than the sum of its proper divisors (1213435164).

1616616172 is a wasteful number, since it uses less digits than its factorization.

1616616172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139008 (or 139006 counting only the distinct ones).

The product of its digits is 18144, while the sum is 37.

The square root of 1616616172 is about 40207.1656797641. The cubic root of 1616616172 is about 1173.6419915486.

The spelling of 1616616172 in words is "one billion, six hundred sixteen million, six hundred sixteen thousand, one hundred seventy-two".