18142917 has 16 divisors (see below), whose sum is σ = 26349120. Its totient is φ = 11037312.

The previous prime is 18142879. The next prime is 18142919. The reversal of 18142917 is 71924181.

It is not a de Polignac number, because 18142917 - 2¹¹ = 18140869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18142919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 858 + ... + 6084.

It is an arithmetic number, because the mean of its divisors is an integer number (1646820).

Almost surely, 2^18142917 is an apocalyptic number.

It is an amenable number.

18142917 is a deficient number, since it is larger than the sum of its proper divisors (8206203).

18142917 is a wasteful number, since it uses less digits than its factorization.

18142917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5332.

The product of its digits is 4032, while the sum is 33.

The square root of 18142917 is about 4259.4503166489. The cubic root of 18142917 is about 262.7659200934.

The spelling of 18142917 in words is "eighteen million, one hundred forty-two thousand, nine hundred seventeen".