40618953 has 12 divisors (see below), whose sum is σ = 58771440. Its totient is φ = 27033336.

The previous prime is 40618931. The next prime is 40618969. The reversal of 40618953 is 35981604.

It is not a de Polignac number, because 40618953 - 2²¹ = 38521801 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (40618553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2278 + ... + 9296.

It is an arithmetic number, because the mean of its divisors is an integer number (4897620).

Almost surely, 2^40618953 is an apocalyptic number.

It is an amenable number.

40618953 is a deficient number, since it is larger than the sum of its proper divisors (18152487).

40618953 is a wasteful number, since it uses less digits than its factorization.

40618953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7668 (or 7665 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 40618953 is about 6373.3000086298. The cubic root of 40618953 is about 343.7501594269.

The spelling of 40618953 in words is "forty million, six hundred eighteen thousand, nine hundred fifty-three".