190306161917 has 2 divisors, whose sum is σ = 190306161918. Its totient is φ = 190306161916.

The previous prime is 190306161907. The next prime is 190306161937. The reversal of 190306161917 is 719161603091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 173450592676 + 16855569241 = 416474^2 + 129829^2 .

It is a cyclic number.

It is not a de Polignac number, because 190306161917 - 2³⁴ = 173126292733 is a prime.

It is a super-2 number, since 2×190306161917² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190306161907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95153080958 + 95153080959.

It is an arithmetic number, because the mean of its divisors is an integer number (95153080959).

Almost surely, 2^190306161917 is an apocalyptic number.

It is an amenable number.

190306161917 is a deficient number, since it is larger than the sum of its proper divisors (1).

190306161917 is an equidigital number, since it uses as much as digits as its factorization.

190306161917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 44.

The spelling of 190306161917 in words is "one hundred ninety billion, three hundred six million, one hundred sixty-one thousand, nine hundred seventeen".