40590618 has 8 divisors (see below), whose sum is σ = 81181248. Its totient is φ = 13530204.

The previous prime is 40590547. The next prime is 40590647. The reversal of 40590618 is 81609504.

It is a sphenic number, since it is the product of 3 distinct primes.

40590618 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3382546 + ... + 3382557.

It is an arithmetic number, because the mean of its divisors is an integer number (10147656).

Almost surely, 2^40590618 is an apocalyptic number.

40590618 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40590618 is a wasteful number, since it uses less digits than its factorization.

40590618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6765108.

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

The square root of 40590618 is about 6371.0766750997. The cubic root of 40590618 is about 343.6702096680.

The spelling of 40590618 in words is "forty million, five hundred ninety thousand, six hundred eighteen".