213019789 has 2 divisors, whose sum is σ = 213019790. Its totient is φ = 213019788.

The previous prime is 213019783. The next prime is 213019823. The reversal of 213019789 is 987910312.

213019789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211469764 + 1550025 = 14542^2 + 1245^2 .

It is a cyclic number.

It is not a de Polignac number, because 213019789 - 2⁵ = 213019757 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213019783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106509894 + 106509895.

It is an arithmetic number, because the mean of its divisors is an integer number (106509895).

Almost surely, 2^213019789 is an apocalyptic number.

It is an amenable number.

213019789 is a deficient number, since it is larger than the sum of its proper divisors (1).

213019789 is an equidigital number, since it uses as much as digits as its factorization.

213019789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 213019789 is about 14595.1974635494. The cubic root of 213019789 is about 597.2277562050.

The spelling of 213019789 in words is "two hundred thirteen million, nineteen thousand, seven hundred eighty-nine".