213922819 has 8 divisors (see below), whose sum is σ = 234134208. Its totient is φ = 193838760.

The previous prime is 213922817. The next prime is 213922859. The reversal of 213922819 is 918229312.

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

It is a cyclic number.

It is not a de Polignac number, because 213922819 - 2¹ = 213922817 is a prime.

It is a super-2 number, since 2×213922819² = 91525944977813522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213922817) 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, 28297 + ... + 35050.

It is an arithmetic number, because the mean of its divisors is an integer number (29266776).

Almost surely, 2^213922819 is an apocalyptic number.

213922819 is a deficient number, since it is larger than the sum of its proper divisors (20211389).

213922819 is a wasteful number, since it uses less digits than its factorization.

213922819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63665.

The product of its digits is 15552, while the sum is 37.

The square root of 213922819 is about 14626.1006081594. The cubic root of 213922819 is about 598.0704858695.

The spelling of 213922819 in words is "two hundred thirteen million, nine hundred twenty-two thousand, eight hundred nineteen".