18082742 has 4 divisors (see below), whose sum is σ = 27124116. Its totient is φ = 9041370.

The previous prime is 18082741. The next prime is 18082769. The reversal of 18082742 is 24728081.

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 = 18082699 and 18082708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18082741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4520684 + ... + 4520687.

It is an arithmetic number, because the mean of its divisors is an integer number (6781029).

Almost surely, 2^18082742 is an apocalyptic number.

18082742 is a deficient number, since it is larger than the sum of its proper divisors (9041374).

18082742 is an equidigital number, since it uses as much as digits as its factorization.

18082742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9041373.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 18082742 is about 4252.3807449475. The cubic root of 18082742 is about 262.4750912117.

The spelling of 18082742 in words is "eighteen million, eighty-two thousand, seven hundred forty-two".