16195117 has 2 divisors, whose sum is σ = 16195118. Its totient is φ = 16195116.

The previous prime is 16195099. The next prime is 16195121. The reversal of 16195117 is 71159161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15634116 + 561001 = 3954^2 + 749^2 .

It is a cyclic number.

It is not a de Polignac number, because 16195117 - 2²³ = 7806509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16190117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8097558 + 8097559.

It is an arithmetic number, because the mean of its divisors is an integer number (8097559).

Almost surely, 2^16195117 is an apocalyptic number.

It is an amenable number.

16195117 is a deficient number, since it is larger than the sum of its proper divisors (1).

16195117 is an equidigital number, since it uses as much as digits as its factorization.

16195117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1890, while the sum is 31.

The square root of 16195117 is about 4024.3157182309. The cubic root of 16195117 is about 253.0043743092.

The spelling of 16195117 in words is "sixteen million, one hundred ninety-five thousand, one hundred seventeen".