350642189 has 2 divisors, whose sum is σ = 350642190. Its totient is φ = 350642188.

The previous prime is 350642129. The next prime is 350642191. The reversal of 350642189 is 981246053.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188512900 + 162129289 = 13730^2 + 12733^2 .

It is a cyclic number.

It is not a de Polignac number, because 350642189 - 2²⁰ = 349593613 is a prime.

Together with 350642191, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (350642129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175321094 + 175321095.

It is an arithmetic number, because the mean of its divisors is an integer number (175321095).

Almost surely, 2^350642189 is an apocalyptic number.

It is an amenable number.

350642189 is a deficient number, since it is larger than the sum of its proper divisors (1).

350642189 is an equidigital number, since it uses as much as digits as its factorization.

350642189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 350642189 is about 18725.4422911717. The cubic root of 350642189 is about 705.1606286911.

The spelling of 350642189 in words is "three hundred fifty million, six hundred forty-two thousand, one hundred eighty-nine".