213850919 has 4 divisors (see below), whose sum is σ = 217885896. Its totient is φ = 209815944.

The previous prime is 213850907. The next prime is 213850921. The reversal of 213850919 is 919058312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213850919 - 2¹² = 213846823 is a prime.

It is a super-2 number, since 2×213850919² = 91464431114289122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213850019) by changing a digit.

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, 2017409 + ... + 2017514.

It is an arithmetic number, because the mean of its divisors is an integer number (54471474).

Almost surely, 2^213850919 is an apocalyptic number.

213850919 is a deficient number, since it is larger than the sum of its proper divisors (4034977).

213850919 is an equidigital number, since it uses as much as digits as its factorization.

213850919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4034976.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 213850919 is about 14623.6424669095. The cubic root of 213850919 is about 598.0034740275.

The spelling of 213850919 in words is "two hundred thirteen million, eight hundred fifty thousand, nine hundred nineteen".