18452545 has 16 divisors (see below), whose sum is σ = 22861440. Its totient is φ = 14291200.

The previous prime is 18452543. The next prime is 18452549. The reversal of 18452545 is 54525481.

It is a happy number.

It is not a de Polignac number, because 18452545 - 2¹ = 18452543 is a prime.

It is a super-3 number, since 3×18452545³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18452545.

It is not an unprimeable number, because it can be changed into a prime (18452543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20505 + ... + 21385.

It is an arithmetic number, because the mean of its divisors is an integer number (1428840).

Almost surely, 2^18452545 is an apocalyptic number.

It is an amenable number.

18452545 is a deficient number, since it is larger than the sum of its proper divisors (4408895).

18452545 is an equidigital number, since it uses as much as digits as its factorization.

18452545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016.

The product of its digits is 32000, while the sum is 34.

The square root of 18452545 is about 4295.6425596178. The cubic root of 18452545 is about 264.2522888612.

The spelling of 18452545 in words is "eighteen million, four hundred fifty-two thousand, five hundred forty-five".