45918290 has 48 divisors (see below), whose sum is σ = 91843416. Its totient is φ = 16515840.

The previous prime is 45918289. The next prime is 45918293. The reversal of 45918290 is 9281954.

It can be written as a sum of positive squares in 4 ways, for example, as 31348801 + 14569489 = 5599^2 + 3817^2 .

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (45918293) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165632 + ... + 165908.

Almost surely, 2^45918290 is an apocalyptic number.

45918290 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

45918290 is a wasteful number, since it uses less digits than its factorization.

45918290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 45918290 is about 6776.3035646287. The cubic root of 45918290 is about 358.0925085778.

The spelling of 45918290 in words is "forty-five million, nine hundred eighteen thousand, two hundred ninety".