18641282 has 16 divisors (see below), whose sum is σ = 32298912. Its totient is φ = 7974720.

The previous prime is 18641251. The next prime is 18641297. The reversal of 18641282 is 28214681.

It is a happy number.

It is a super-3 number, since 3×18641282³ (a number of 23 digits) contains 333 as substring.

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, 24548 + ... + 25295.

It is an arithmetic number, because the mean of its divisors is an integer number (2018682).

Almost surely, 2^18641282 is an apocalyptic number.

18641282 is a deficient number, since it is larger than the sum of its proper divisors (13657630).

18641282 is a wasteful number, since it uses less digits than its factorization.

18641282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49873.

The product of its digits is 6144, while the sum is 32.

The square root of 18641282 is about 4317.5550951899. Note that the first 3 decimals coincide. The cubic root of 18641282 is about 265.1501795005.

The spelling of 18641282 in words is "eighteen million, six hundred forty-one thousand, two hundred eighty-two".