613220189 has 2 divisors, whose sum is σ = 613220190. Its totient is φ = 613220188.

The previous prime is 613220137. The next prime is 613220197. The reversal of 613220189 is 981022316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 472323289 + 140896900 = 21733^2 + 11870^2 .

It is a cyclic number.

It is not a de Polignac number, because 613220189 - 2¹⁶ = 613154653 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 (613223189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306610094 + 306610095.

It is an arithmetic number, because the mean of its divisors is an integer number (306610095).

Almost surely, 2^613220189 is an apocalyptic number.

It is an amenable number.

613220189 is a deficient number, since it is larger than the sum of its proper divisors (1).

613220189 is an equidigital number, since it uses as much as digits as its factorization.

613220189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 613220189 is about 24763.2830820148. The cubic root of 613220189 is about 849.5823502990.

The spelling of 613220189 in words is "six hundred thirteen million, two hundred twenty thousand, one hundred eighty-nine".