1616016817 has 2 divisors, whose sum is σ = 1616016818. Its totient is φ = 1616016816.

The previous prime is 1616016803. The next prime is 1616016863. The reversal of 1616016817 is 7186106161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1539699121 + 76317696 = 39239^2 + 8736^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1616016817 is a prime.

It is a super-2 number, since 2×1616016817² = 5223020705653622978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1616014817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808008408 + 808008409.

It is an arithmetic number, because the mean of its divisors is an integer number (808008409).

Almost surely, 2^1616016817 is an apocalyptic number.

It is an amenable number.

1616016817 is a deficient number, since it is larger than the sum of its proper divisors (1).

1616016817 is an equidigital number, since it uses as much as digits as its factorization.

1616016817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 1616016817 is about 40199.7116531947. The cubic root of 1616016817 is about 1173.4969323488.

The spelling of 1616016817 in words is "one billion, six hundred sixteen million, sixteen thousand, eight hundred seventeen".