40018167 has 18 divisors (see below), whose sum is σ = 66144728. Its totient is φ = 22838832.

The previous prime is 40018157. The next prime is 40018169. The reversal of 40018167 is 76181004.

It is a happy number.

40018167 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40018167 - 2⁷ = 40018039 is a prime.

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 40018167.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40018169) 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 in 17 ways as a sum of consecutive naturals, for example, 49813 + ... + 50609.

Almost surely, 2^40018167 is an apocalyptic number.

40018167 is a deficient number, since it is larger than the sum of its proper divisors (26126561).

40018167 is an frugal number, since it uses more digits than its factorization.

40018167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607 (or 807 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 40018167 is about 6325.9913847554. The cubic root of 40018167 is about 342.0469567207.

The spelling of 40018167 in words is "forty million, eighteen thousand, one hundred sixty-seven".