40385163 has 32 divisors (see below), whose sum is σ = 67648000. Its totient is φ = 21295008.

The previous prime is 40385161. The next prime is 40385201. The reversal of 40385163 is 36158304.

It is not a de Polignac number, because 40385163 - 2¹ = 40385161 is a prime.

It is a super-2 number, since 2×40385163² = 3261922781073138, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40385163.

It is not an unprimeable number, because it can be changed into a prime (40385161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11868 + ... + 14886.

It is an arithmetic number, because the mean of its divisors is an integer number (2114000).

Almost surely, 2^40385163 is an apocalyptic number.

40385163 is a deficient number, since it is larger than the sum of its proper divisors (27262837).

40385163 is a wasteful number, since it uses less digits than its factorization.

40385163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3056 (or 3042 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 40385163 is about 6354.9321790244. The cubic root of 40385163 is about 343.0893838965.

The spelling of 40385163 in words is "forty million, three hundred eighty-five thousand, one hundred sixty-three".