40818505 has 32 divisors (see below), whose sum is σ = 60689664. Its totient is φ = 25664256.

The previous prime is 40818499. The next prime is 40818521. The reversal of 40818505 is 50581804.

It is a cyclic number.

It is not a de Polignac number, because 40818505 - 2³ = 40818497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128607 + ... + 128923.

It is an arithmetic number, because the mean of its divisors is an integer number (1896552).

Almost surely, 2^40818505 is an apocalyptic number.

It is an amenable number.

40818505 is a deficient number, since it is larger than the sum of its proper divisors (19871159).

40818505 is a wasteful number, since it uses less digits than its factorization.

40818505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625.

The product of its (nonzero) digits is 6400, while the sum is 31.

The square root of 40818505 is about 6388.9361399219. The cubic root of 40818505 is about 344.3121631217.

The spelling of 40818505 in words is "forty million, eight hundred eighteen thousand, five hundred five".