45405918 has 24 divisors (see below), whose sum is σ = 98689656. Its totient is φ = 15087600.

The previous prime is 45405889. The next prime is 45405949. The reversal of 45405918 is 81950454.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2148 + ... + 9768.

It is an arithmetic number, because the mean of its divisors is an integer number (4112069).

Almost surely, 2^45405918 is an apocalyptic number.

45405918 is an abundant number, since it is smaller than the sum of its proper divisors (53283738).

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

45405918 is a wasteful number, since it uses less digits than its factorization.

45405918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7960 (or 7957 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 45405918 is about 6738.3913510570. The cubic root of 45405918 is about 356.7556174141.

The spelling of 45405918 in words is "forty-five million, four hundred five thousand, nine hundred eighteen".