18859146 has 16 divisors (see below), whose sum is σ = 37995264. Its totient is φ = 6240224.

The previous prime is 18859123. The next prime is 18859147. The reversal of 18859146 is 64195881.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18859098 and 18859107.

It is not an unprimeable number, because it can be changed into a prime (18859147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10650 + ... + 12293.

It is an arithmetic number, because the mean of its divisors is an integer number (2374704).

Almost surely, 2^18859146 is an apocalyptic number.

18859146 is an abundant number, since it is smaller than the sum of its proper divisors (19136118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18859146 is a wasteful number, since it uses less digits than its factorization.

18859146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23085.

The product of its digits is 69120, while the sum is 42.

The square root of 18859146 is about 4342.7118255763. The cubic root of 18859146 is about 266.1791338651.

The spelling of 18859146 in words is "eighteen million, eight hundred fifty-nine thousand, one hundred forty-six".