40113818 has 8 divisors (see below), whose sum is σ = 60395220. Its totient is φ = 19982080.

The previous prime is 40113791. The next prime is 40113841. The reversal of 40113818 is 81831104.

It can be written as a sum of positive squares in 2 ways, for example, as 38105929 + 2007889 = 6173^2 + 1417^2 .

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

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, 36743 + ... + 37818.

Almost surely, 2^40113818 is an apocalyptic number.

40113818 is a deficient number, since it is larger than the sum of its proper divisors (20281402).

40113818 is a wasteful number, since it uses less digits than its factorization.

40113818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74832.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 40113818 is about 6333.5470314824. The cubic root of 40113818 is about 342.3192588920.

The spelling of 40113818 in words is "forty million, one hundred thirteen thousand, eight hundred eighteen".