18639482 has 8 divisors (see below), whose sum is σ = 27980256. Its totient is φ = 9312732.

The previous prime is 18639479. The next prime is 18639487. The reversal of 18639482 is 28493681.

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

It is not an unprimeable number, because it can be changed into a prime (18639487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 953 + ... + 6179.

It is an arithmetic number, because the mean of its divisors is an integer number (3497532).

Almost surely, 2^18639482 is an apocalyptic number.

18639482 is a deficient number, since it is larger than the sum of its proper divisors (9340774).

18639482 is a wasteful number, since it uses less digits than its factorization.

18639482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7012.

The product of its digits is 82944, while the sum is 41.

The square root of 18639482 is about 4317.3466388512. The cubic root of 18639482 is about 265.1416449358.

The spelling of 18639482 in words is "eighteen million, six hundred thirty-nine thousand, four hundred eighty-two".