18564145 has 8 divisors (see below), whose sum is σ = 22438080. Its totient is φ = 14743920.

The previous prime is 18564127. The next prime is 18564149. The reversal of 18564145 is 54146581.

18564145 = 1358² + 1359² + ... + 1367².

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18564145 - 2¹¹ = 18562097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18564145.

It is not an unprimeable number, because it can be changed into a prime (18564149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12661 + ... + 14050.

It is an arithmetic number, because the mean of its divisors is an integer number (2804760).

Almost surely, 2^18564145 is an apocalyptic number.

It is an amenable number.

18564145 is a deficient number, since it is larger than the sum of its proper divisors (3873935).

18564145 is a wasteful number, since it uses less digits than its factorization.

18564145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26855.

The product of its digits is 19200, while the sum is 34.

The square root of 18564145 is about 4308.6128858369. The cubic root of 18564145 is about 264.7839463636.

The spelling of 18564145 in words is "eighteen million, five hundred sixty-four thousand, one hundred forty-five".