213818966 has 8 divisors (see below), whose sum is σ = 331074624. Its totient is φ = 103460760.

The previous prime is 213818959. The next prime is 213818981. The reversal of 213818966 is 669818312.

213818966 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1724285 + ... + 1724408.

It is an arithmetic number, because the mean of its divisors is an integer number (41384328).

Almost surely, 2^213818966 is an apocalyptic number.

213818966 is a deficient number, since it is larger than the sum of its proper divisors (117255658).

213818966 is a wasteful number, since it uses less digits than its factorization.

213818966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3448726.

The product of its digits is 124416, while the sum is 44.

The square root of 213818966 is about 14622.5499144301. The cubic root of 213818966 is about 597.9736885475.

The spelling of 213818966 in words is "two hundred thirteen million, eight hundred eighteen thousand, nine hundred sixty-six".