45791919 has 32 divisors (see below), whose sum is σ = 74534400. Its totient is φ = 27656640.

The previous prime is 45791891. The next prime is 45791927. The reversal of 45791919 is 91919754.

45791919 is a `hidden beast` number, since 457 + 9 + 191 + 9 = 666.

It is not a de Polignac number, because 45791919 - 2⁷ = 45791791 is a prime.

It is a super-2 number, since 2×45791919² = 4193799691405122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45791939) 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 in 31 ways as a sum of consecutive naturals, for example, 9859 + ... + 13739.

It is an arithmetic number, because the mean of its divisors is an integer number (2329200).

Almost surely, 2^45791919 is an apocalyptic number.

45791919 is a deficient number, since it is larger than the sum of its proper divisors (28742481).

45791919 is a wasteful number, since it uses less digits than its factorization.

45791919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3932 (or 3926 counting only the distinct ones).

The product of its digits is 102060, while the sum is 45.

The square root of 45791919 is about 6766.9726613900. The cubic root of 45791919 is about 357.7637065188.

The spelling of 45791919 in words is "forty-five million, seven hundred ninety-one thousand, nine hundred nineteen".