45118919 has 16 divisors (see below), whose sum is σ = 48107520. Its totient is φ = 42250080.

The previous prime is 45118897. The next prime is 45118933. The reversal of 45118919 is 91981154.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45118919 is a prime.

It is a super-2 number, since 2×45118919² = 4071433703457122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45118949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251972 + ... + 252150.

It is an arithmetic number, because the mean of its divisors is an integer number (3006720).

Almost surely, 2^45118919 is an apocalyptic number.

45118919 is a deficient number, since it is larger than the sum of its proper divisors (2988601).

45118919 is a wasteful number, since it uses less digits than its factorization.

45118919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430.

The product of its digits is 12960, while the sum is 38.

The square root of 45118919 is about 6717.0617832502. The cubic root of 45118919 is about 356.0023749999.

The spelling of 45118919 in words is "forty-five million, one hundred eighteen thousand, nine hundred nineteen".