18826213 has 8 divisors (see below), whose sum is σ = 22451328. Its totient is φ = 15435024.

The previous prime is 18826211. The next prime is 18826231. The reversal of 18826213 is 31262881.

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

It is not a de Polignac number, because 18826213 - 2¹ = 18826211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18826211) 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, 58306 + ... + 58627.

It is an arithmetic number, because the mean of its divisors is an integer number (2806416).

Almost surely, 2^18826213 is an apocalyptic number.

It is an amenable number.

18826213 is a deficient number, since it is larger than the sum of its proper divisors (3625115).

18826213 is a wasteful number, since it uses less digits than its factorization.

18826213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116963.

The product of its digits is 4608, while the sum is 31.

The square root of 18826213 is about 4338.9184136142. The cubic root of 18826213 is about 266.0241041341.

The spelling of 18826213 in words is "eighteen million, eight hundred twenty-six thousand, two hundred thirteen".