22318159 has 4 divisors (see below), whose sum is σ = 22435200. Its totient is φ = 22201120.

The previous prime is 22318157. The next prime is 22318181. The reversal of 22318159 is 95181322.

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

It is a cyclic number.

It is not a de Polignac number, because 22318159 - 2¹ = 22318157 is a prime.

It is a super-3 number, since 3×22318159³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 22318159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22318151) 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, 58234 + ... + 58615.

It is an arithmetic number, because the mean of its divisors is an integer number (5608800).

Almost surely, 2^22318159 is an apocalyptic number.

22318159 is a deficient number, since it is larger than the sum of its proper divisors (117041).

22318159 is a wasteful number, since it uses less digits than its factorization.

22318159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117040.

The product of its digits is 4320, while the sum is 31.

The square root of 22318159 is about 4724.2098810277. The cubic root of 22318159 is about 281.5482220075.

The spelling of 22318159 in words is "twenty-two million, three hundred eighteen thousand, one hundred fifty-nine".