40811518 has 32 divisors (see below), whose sum is σ = 69215328. Its totient is φ = 17884800.

The previous prime is 40811513. The next prime is 40811521. The reversal of 40811518 is 81511804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40811513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147196 + ... + 147472.

It is an arithmetic number, because the mean of its divisors is an integer number (2162979).

Almost surely, 2^40811518 is an apocalyptic number.

40811518 is a deficient number, since it is larger than the sum of its proper divisors (28403810).

40811518 is a wasteful number, since it uses less digits than its factorization.

40811518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508.

The product of its (nonzero) digits is 1280, while the sum is 28.

The square root of 40811518 is about 6388.3893118688. The cubic root of 40811518 is about 344.2925164250.

The spelling of 40811518 in words is "forty million, eight hundred eleven thousand, five hundred eighteen".