40818634 has 4 divisors (see below), whose sum is σ = 61227954. Its totient is φ = 20409316.

The previous prime is 40818523. The next prime is 40818671. The reversal of 40818634 is 43681804.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 36421225 + 4397409 = 6035^2 + 2097^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40818634.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10204657 + ... + 10204660.

Almost surely, 2^40818634 is an apocalyptic number.

40818634 is a deficient number, since it is larger than the sum of its proper divisors (20409320).

40818634 is a wasteful number, since it uses less digits than its factorization.

40818634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20409319.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 40818634 is about 6388.9462354914. The cubic root of 40818634 is about 344.3125258348.

The spelling of 40818634 in words is "forty million, eight hundred eighteen thousand, six hundred thirty-four".