18082642 has 8 divisors (see below), whose sum is σ = 28551600. Its totient is φ = 8565444.

The previous prime is 18082637. The next prime is 18082651. The reversal of 18082642 is 24628081.

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

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 in 3 ways as a sum of consecutive naturals, for example, 237892 + ... + 237967.

It is an arithmetic number, because the mean of its divisors is an integer number (3568950).

Almost surely, 2^18082642 is an apocalyptic number.

18082642 is a deficient number, since it is larger than the sum of its proper divisors (10468958).

18082642 is a wasteful number, since it uses less digits than its factorization.

18082642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475880.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 18082642 is about 4252.3689868119. The cubic root of 18082642 is about 262.4746073699.

The spelling of 18082642 in words is "eighteen million, eighty-two thousand, six hundred forty-two".