45815418 has 96 divisors (see below), whose sum is σ = 114566400. Its totient is φ = 13104000.

The previous prime is 45815411. The next prime is 45815423. The reversal of 45815418 is 81451854.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (45815411) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 453568 + ... + 453668.

It is an arithmetic number, because the mean of its divisors is an integer number (1193400).

Almost surely, 2^45815418 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45815418, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57283200).

45815418 is an abundant number, since it is smaller than the sum of its proper divisors (68750982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45815418 is a wasteful number, since it uses less digits than its factorization.

45815418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228 (or 225 counting only the distinct ones).

The product of its digits is 25600, while the sum is 36.

The square root of 45815418 is about 6768.7087394864. The cubic root of 45815418 is about 357.8248938188.

It can be divided in two parts, 4581 and 5418, that added together give a palindrome (9999).

The spelling of 45815418 in words is "forty-five million, eight hundred fifteen thousand, four hundred eighteen".