18052645 has 32 divisors (see below), whose sum is σ = 24685920. Its totient is φ = 12579840.

The previous prime is 18052637. The next prime is 18052651. The reversal of 18052645 is 54625081.

It can be written as a sum of positive squares in 16 ways, for example, as 13667809 + 4384836 = 3697^2 + 2094^2 .

It is not a de Polignac number, because 18052645 - 2³ = 18052637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114907 + ... + 115063.

It is an arithmetic number, because the mean of its divisors is an integer number (771435).

Almost surely, 2^18052645 is an apocalyptic number.

It is an amenable number.

18052645 is a deficient number, since it is larger than the sum of its proper divisors (6633275).

18052645 is a wasteful number, since it uses less digits than its factorization.

18052645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 18052645 is about 4248.8404300468. The cubic root of 18052645 is about 262.3293887577.

It can be divided in two parts, 1805 and 2645, that multiplied together give a square (4774225 = 2185²).

The spelling of 18052645 in words is "eighteen million, fifty-two thousand, six hundred forty-five".