18212841 has 24 divisors (see below), whose sum is σ = 28104960. Its totient is φ = 11340000.

The previous prime is 18212839. The next prime is 18212861. The reversal of 18212841 is 14821281.

It is not a de Polignac number, because 18212841 - 2¹ = 18212839 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18212861) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6966 + ... + 9216.

It is an arithmetic number, because the mean of its divisors is an integer number (1171040).

Almost surely, 2^18212841 is an apocalyptic number.

It is an amenable number.

18212841 is a deficient number, since it is larger than the sum of its proper divisors (9892119).

18212841 is a wasteful number, since it uses less digits than its factorization.

18212841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2317 (or 2314 counting only the distinct ones).

The product of its digits is 1024, while the sum is 27.

The square root of 18212841 is about 4267.6505245861. The cubic root of 18212841 is about 263.1030597459.

The spelling of 18212841 in words is "eighteen million, two hundred twelve thousand, eight hundred forty-one".