18454645 has 8 divisors (see below), whose sum is σ = 24158880. Its totient is φ = 13421520.

The previous prime is 18454627. The next prime is 18454651. The reversal of 18454645 is 54645481.

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

It is not a de Polignac number, because 18454645 - 2¹¹ = 18452597 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167715 + ... + 167824.

It is an arithmetic number, because the mean of its divisors is an integer number (3019860).

Almost surely, 2^18454645 is an apocalyptic number.

It is an amenable number.

18454645 is a deficient number, since it is larger than the sum of its proper divisors (5704235).

18454645 is a wasteful number, since it uses less digits than its factorization.

18454645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335555.

The product of its digits is 76800, while the sum is 37.

The square root of 18454645 is about 4295.8869864092. The cubic root of 18454645 is about 264.2623129302.

The spelling of 18454645 in words is "eighteen million, four hundred fifty-four thousand, six hundred forty-five".