40182643 has 2 divisors, whose sum is σ = 40182644. Its totient is φ = 40182642.

The previous prime is 40182619. The next prime is 40182689. The reversal of 40182643 is 34628104.

40182643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40182643 is a prime.

It is a super-2 number, since 2×40182643² = 3229289596930898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40182743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20091321 + 20091322.

It is an arithmetic number, because the mean of its divisors is an integer number (20091322).

Almost surely, 2^40182643 is an apocalyptic number.

40182643 is a deficient number, since it is larger than the sum of its proper divisors (1).

40182643 is an equidigital number, since it uses as much as digits as its factorization.

40182643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 40182643 is about 6338.9780722132. The cubic root of 40182643 is about 342.5149243146.

The spelling of 40182643 in words is "forty million, one hundred eighty-two thousand, six hundred forty-three".