45169919 has 2 divisors, whose sum is σ = 45169920. Its totient is φ = 45169918.

The previous prime is 45169889. The next prime is 45169931. The reversal of 45169919 is 91996154.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45169919 is a prime.

It is a super-2 number, since 2×45169919² = 4080643164933122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45169919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45169519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22584959 + 22584960.

It is an arithmetic number, because the mean of its divisors is an integer number (22584960).

Almost surely, 2^45169919 is an apocalyptic number.

45169919 is a deficient number, since it is larger than the sum of its proper divisors (1).

45169919 is an equidigital number, since it uses as much as digits as its factorization.

45169919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 44.

The square root of 45169919 is about 6720.8570138041. The cubic root of 45169919 is about 356.1364598060.

The spelling of 45169919 in words is "forty-five million, one hundred sixty-nine thousand, nine hundred nineteen".