18213334 has 16 divisors (see below), whose sum is σ = 28401120. Its totient is φ = 8749440.

The previous prime is 18213317. The next prime is 18213353. The reversal of 18213334 is 43331281.

It is a junction number, because it is equal to n+sod(n) for n = 18213299 and 18213308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13327 + ... + 14629.

It is an arithmetic number, because the mean of its divisors is an integer number (1775070).

Almost surely, 2^18213334 is an apocalyptic number.

18213334 is a deficient number, since it is larger than the sum of its proper divisors (10187786).

18213334 is a wasteful number, since it uses less digits than its factorization.

18213334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575.

The product of its digits is 1728, while the sum is 25.

The square root of 18213334 is about 4267.7082843137. The cubic root of 18213334 is about 263.1054336870.

The spelling of 18213334 in words is "eighteen million, two hundred thirteen thousand, three hundred thirty-four".