40518685 has 8 divisors (see below), whose sum is σ = 49753440. Its totient is φ = 31660944.

The previous prime is 40518661. The next prime is 40518689. The reversal of 40518685 is 58681504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40518685 - 2¹³ = 40510493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40518689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94015 + ... + 94444.

It is an arithmetic number, because the mean of its divisors is an integer number (6219180).

Almost surely, 2^40518685 is an apocalyptic number.

It is an amenable number.

40518685 is a deficient number, since it is larger than the sum of its proper divisors (9234755).

40518685 is a wasteful number, since it uses less digits than its factorization.

40518685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188507.

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 40518685 is about 6365.4288936410. The cubic root of 40518685 is about 343.4670769565.

The spelling of 40518685 in words is "forty million, five hundred eighteen thousand, six hundred eighty-five".