1616664115 has 32 divisors (see below), whose sum is σ = 2237414400. Its totient is φ = 1109041920.

The previous prime is 1616664061. The next prime is 1616664173. The reversal of 1616664115 is 5114666161.

It is not a de Polignac number, because 1616664115 - 2⁷ = 1616663987 is a prime.

It is a super-2 number, since 2×1616664115² = 5227205721457466450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 246519 + ... + 252991.

It is an arithmetic number, because the mean of its divisors is an integer number (69919200).

Almost surely, 2^1616664115 is an apocalyptic number.

1616664115 is a deficient number, since it is larger than the sum of its proper divisors (620750285).

1616664115 is a wasteful number, since it uses less digits than its factorization.

1616664115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6747.

The product of its digits is 25920, while the sum is 37.

The square root of 1616664115 is about 40207.7618750410. The cubic root of 1616664115 is about 1173.6535934289.

The spelling of 1616664115 in words is "one billion, six hundred sixteen million, six hundred sixty-four thousand, one hundred fifteen".