40818815 has 8 divisors (see below), whose sum is σ = 49018608. Its totient is φ = 32631040.

The previous prime is 40818803. The next prime is 40818829. The reversal of 40818815 is 51881804.

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

It is not a de Polignac number, because 40818815 - 2²⁰ = 39770239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8444 + ... + 12366.

It is an arithmetic number, because the mean of its divisors is an integer number (6127326).

Almost surely, 2^40818815 is an apocalyptic number.

40818815 is a deficient number, since it is larger than the sum of its proper divisors (8199793).

40818815 is a wasteful number, since it uses less digits than its factorization.

40818815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6009.

The product of its (nonzero) digits is 10240, while the sum is 35.

The square root of 40818815 is about 6388.9604005660. The cubic root of 40818815 is about 344.3130347566.

The spelling of 40818815 in words is "forty million, eight hundred eighteen thousand, eight hundred fifteen".