18492213 has 8 divisors (see below), whose sum is σ = 25451776. Its totient is φ = 11930400.

The previous prime is 18492137. The next prime is 18492217. The reversal of 18492213 is 31229481.

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

It is not a de Polignac number, because 18492213 - 2¹² = 18488117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18492217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99328 + ... + 99513.

It is an arithmetic number, because the mean of its divisors is an integer number (3181472).

Almost surely, 2^18492213 is an apocalyptic number.

It is an amenable number.

18492213 is a deficient number, since it is larger than the sum of its proper divisors (6959563).

18492213 is a wasteful number, since it uses less digits than its factorization.

18492213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198875.

The product of its digits is 3456, while the sum is 30.

The square root of 18492213 is about 4300.2573178823. The cubic root of 18492213 is about 264.4415104082.

The spelling of 18492213 in words is "eighteen million, four hundred ninety-two thousand, two hundred thirteen".