40646163 has 4 divisors (see below), whose sum is σ = 54194888. Its totient is φ = 27097440.

The previous prime is 40646161. The next prime is 40646173. The reversal of 40646163 is 36164604.

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

It is not a de Polignac number, because 40646163 - 2¹ = 40646161 is a prime.

It is a super-2 number, since 2×40646163² = 3304221133245138, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40646163.

It is not an unprimeable number, because it can be changed into a prime (40646161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6774358 + ... + 6774363.

It is an arithmetic number, because the mean of its divisors is an integer number (13548722).

Almost surely, 2^40646163 is an apocalyptic number.

40646163 is a deficient number, since it is larger than the sum of its proper divisors (13548725).

40646163 is a wasteful number, since it uses less digits than its factorization.

40646163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13548724.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 40646163 is about 6375.4343381451. The cubic root of 40646163 is about 343.8268999085.

The spelling of 40646163 in words is "forty million, six hundred forty-six thousand, one hundred sixty-three".