18459145 has 16 divisors (see below), whose sum is σ = 22718592. Its totient is φ = 14394240.

The previous prime is 18459137. The next prime is 18459157. The reversal of 18459145 is 54195481.

It is not a de Polignac number, because 18459145 - 2³ = 18459137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37350 + ... + 37840.

It is an arithmetic number, because the mean of its divisors is an integer number (1419912).

Almost surely, 2^18459145 is an apocalyptic number.

It is an amenable number.

18459145 is a deficient number, since it is larger than the sum of its proper divisors (4259447).

18459145 is a wasteful number, since it uses less digits than its factorization.

18459145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672.

The product of its digits is 28800, while the sum is 37.

The square root of 18459145 is about 4296.4107112798. The cubic root of 18459145 is about 264.2837905178.

The spelling of 18459145 in words is "eighteen million, four hundred fifty-nine thousand, one hundred forty-five".