18559145 has 16 divisors (see below), whose sum is σ = 24496128. Its totient is φ = 13386240.

The previous prime is 18559139. The next prime is 18559147. The reversal of 18559145 is 54195581.

It is not a de Polignac number, because 18559145 - 2⁸ = 18558889 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18559099 and 18559108.

It is not an unprimeable number, because it can be changed into a prime (18559147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5657 + ... + 8313.

It is an arithmetic number, because the mean of its divisors is an integer number (1531008).

Almost surely, 2^18559145 is an apocalyptic number.

It is an amenable number.

18559145 is a deficient number, since it is larger than the sum of its proper divisors (5936983).

18559145 is a wasteful number, since it uses less digits than its factorization.

18559145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2800.

The product of its digits is 36000, while the sum is 38.

The square root of 18559145 is about 4308.0326136184. The cubic root of 18559145 is about 264.7601722440.

The spelling of 18559145 in words is "eighteen million, five hundred fifty-nine thousand, one hundred forty-five".