18486142 has 4 divisors (see below), whose sum is σ = 27729216. Its totient is φ = 9243070.

The previous prime is 18486133. The next prime is 18486161. The reversal of 18486142 is 24168481.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 18486098 and 18486107.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4621534 + ... + 4621537.

It is an arithmetic number, because the mean of its divisors is an integer number (6932304).

Almost surely, 2^18486142 is an apocalyptic number.

18486142 is a deficient number, since it is larger than the sum of its proper divisors (9243074).

18486142 is an equidigital number, since it uses as much as digits as its factorization.

18486142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9243073.

The product of its digits is 12288, while the sum is 34.

The square root of 18486142 is about 4299.5513719457. The cubic root of 18486142 is about 264.4125684940.

The spelling of 18486142 in words is "eighteen million, four hundred eighty-six thousand, one hundred forty-two".