40113618 has 8 divisors (see below), whose sum is σ = 80227248. Its totient is φ = 13371204.

The previous prime is 40113589. The next prime is 40113643. The reversal of 40113618 is 81631104.

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

40113618 is an admirable number.

It is a Curzon 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 3 ways as a sum of consecutive naturals, for example, 3342796 + ... + 3342807.

It is an arithmetic number, because the mean of its divisors is an integer number (10028406).

Almost surely, 2^40113618 is an apocalyptic number.

40113618 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.

40113618 is a wasteful number, since it uses less digits than its factorization.

40113618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6685608.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 40113618 is about 6333.5312425218. The cubic root of 40113618 is about 342.3186899778.

The spelling of 40113618 in words is "forty million, one hundred thirteen thousand, six hundred eighteen".