18049042 has 8 divisors (see below), whose sum is σ = 29534832. Its totient is φ = 8204100.

The previous prime is 18049021. The next prime is 18049079. The reversal of 18049042 is 24094081.

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

It is a self number, because there is not a number n which added to its sum of digits gives 18049042.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410184 + ... + 410227.

It is an arithmetic number, because the mean of its divisors is an integer number (3691854).

Almost surely, 2^18049042 is an apocalyptic number.

18049042 is a deficient number, since it is larger than the sum of its proper divisors (11485790).

18049042 is a wasteful number, since it uses less digits than its factorization.

18049042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820424.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 18049042 is about 4248.4164108524. The cubic root of 18049042 is about 262.3119354395.

The spelling of 18049042 in words is "eighteen million, forty-nine thousand, forty-two".