8165185423 has 2 divisors, whose sum is σ = 8165185424. Its totient is φ = 8165185422.

The previous prime is 8165185417. The next prime is 8165185433. The reversal of 8165185423 is 3245815618.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8165185423 is a prime.

It is a super-3 number, since 3×8165185423³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8165185423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8165185433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4082592711 + 4082592712.

It is an arithmetic number, because the mean of its divisors is an integer number (4082592712).

Almost surely, 2^8165185423 is an apocalyptic number.

8165185423 is a deficient number, since it is larger than the sum of its proper divisors (1).

8165185423 is an equidigital number, since it uses as much as digits as its factorization.

8165185423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 230400, while the sum is 43.

The square root of 8165185423 is about 90361.4155654945. The cubic root of 8165185423 is about 2013.6717801721.

The spelling of 8165185423 in words is "eight billion, one hundred sixty-five million, one hundred eighty-five thousand, four hundred twenty-three".