18293053 has 4 divisors (see below), whose sum is σ = 18303228. Its totient is φ = 18282880.

The previous prime is 18293021. The next prime is 18293057. The reversal of 18293053 is 35039281.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6335289 + 11957764 = 2517^2 + 3458^2 .

It is a cyclic number.

It is not a de Polignac number, because 18293053 - 2⁵ = 18293021 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18293057) 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, 1588 + ... + 6253.

It is an arithmetic number, because the mean of its divisors is an integer number (4575807).

Almost surely, 2^18293053 is an apocalyptic number.

It is an amenable number.

18293053 is a deficient number, since it is larger than the sum of its proper divisors (10175).

18293053 is an equidigital number, since it uses as much as digits as its factorization.

18293053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10174.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 18293053 is about 4277.0378768489. The cubic root of 18293053 is about 263.4887421422.

The spelling of 18293053 in words is "eighteen million, two hundred ninety-three thousand, fifty-three".