18021034 has 8 divisors (see below), whose sum is σ = 27057888. Its totient is φ = 9001740.

The previous prime is 18020993. The next prime is 18021053. The reversal of 18021034 is 43012081.

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, 1422 + ... + 6169.

It is an arithmetic number, because the mean of its divisors is an integer number (3382236).

Almost surely, 2^18021034 is an apocalyptic number.

18021034 is a deficient number, since it is larger than the sum of its proper divisors (9036854).

18021034 is a wasteful number, since it uses less digits than its factorization.

18021034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8780.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 18021034 is about 4245.1188440372. The cubic root of 18021034 is about 262.1761824141.

The spelling of 18021034 in words is "eighteen million, twenty-one thousand, thirty-four".