45123918 has 16 divisors (see below), whose sum is σ = 103140480. Its totient is φ = 12892536.

The previous prime is 45123893. The next prime is 45123961. The reversal of 45123918 is 81932154.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 537148 + ... + 537231.

It is an arithmetic number, because the mean of its divisors is an integer number (6446280).

Almost surely, 2^45123918 is an apocalyptic number.

45123918 is an abundant number, since it is smaller than the sum of its proper divisors (58016562).

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

45123918 is a wasteful number, since it uses less digits than its factorization.

45123918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074391.

The product of its digits is 8640, while the sum is 33.

The square root of 45123918 is about 6717.4338850487. The cubic root of 45123918 is about 356.0155224053.

The spelling of 45123918 in words is "forty-five million, one hundred twenty-three thousand, nine hundred eighteen".