40611813 has 16 divisors (see below), whose sum is σ = 61641216. Its totient is φ = 23542640.

The previous prime is 40611811. The next prime is 40611847. The reversal of 40611813 is 31811604.

It is not a de Polignac number, because 40611813 - 2¹ = 40611811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40611811) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 25995 + ... + 27512.

It is an arithmetic number, because the mean of its divisors is an integer number (3852576).

Almost surely, 2^40611813 is an apocalyptic number.

It is an amenable number.

40611813 is a deficient number, since it is larger than the sum of its proper divisors (21029403).

40611813 is a wasteful number, since it uses less digits than its factorization.

40611813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53544.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 40611813 is about 6372.7398346394. The cubic root of 40611813 is about 343.7300167777.

The spelling of 40611813 in words is "forty million, six hundred eleven thousand, eight hundred thirteen".