18224153 has 4 divisors (see below), whose sum is σ = 19296180. Its totient is φ = 17152128.

The previous prime is 18224149. The next prime is 18224161. The reversal of 18224153 is 35142281.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16908544 + 1315609 = 4112^2 + 1147^2 .

It is a cyclic number.

It is not a de Polignac number, because 18224153 - 2² = 18224149 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18224113) 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, 535988 + ... + 536021.

It is an arithmetic number, because the mean of its divisors is an integer number (4824045).

Almost surely, 2^18224153 is an apocalyptic number.

It is an amenable number.

18224153 is a deficient number, since it is larger than the sum of its proper divisors (1072027).

18224153 is a wasteful number, since it uses less digits than its factorization.

18224153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072026.

The product of its digits is 1920, while the sum is 26.

The square root of 18224153 is about 4268.9756382533. The cubic root of 18224153 is about 263.1575195974.

The spelling of 18224153 in words is "eighteen million, two hundred twenty-four thousand, one hundred fifty-three".