16165117 has 2 divisors, whose sum is σ = 16165118. Its totient is φ = 16165116.

The previous prime is 16165109. The next prime is 16165139. The reversal of 16165117 is 71156161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9084196 + 7080921 = 3014^2 + 2661^2 .

It is a cyclic number.

It is not a de Polignac number, because 16165117 - 2³ = 16165109 is a prime.

It is a super-2 number, since 2×16165117² = 522622015247378, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16165187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8082558 + 8082559.

It is an arithmetic number, because the mean of its divisors is an integer number (8082559).

Almost surely, 2^16165117 is an apocalyptic number.

It is an amenable number.

16165117 is a deficient number, since it is larger than the sum of its proper divisors (1).

16165117 is an equidigital number, since it uses as much as digits as its factorization.

16165117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260, while the sum is 28.

The square root of 16165117 is about 4020.5866487367. The cubic root of 16165117 is about 252.8480551187.

The spelling of 16165117 in words is "sixteen million, one hundred sixty-five thousand, one hundred seventeen".