189022309 has 4 divisors (see below), whose sum is σ = 216025504. Its totient is φ = 162019116.

The previous prime is 189022247. The next prime is 189022333. The reversal of 189022309 is 903220981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 189022309 - 2¹³ = 189014117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189022399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13501587 + ... + 13501600.

It is an arithmetic number, because the mean of its divisors is an integer number (54006376).

Almost surely, 2^189022309 is an apocalyptic number.

It is an amenable number.

189022309 is a deficient number, since it is larger than the sum of its proper divisors (27003195).

189022309 is an equidigital number, since it uses as much as digits as its factorization.

189022309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27003194.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 189022309 is about 13748.5384314115. The cubic root of 189022309 is about 573.9019336162.

The spelling of 189022309 in words is "one hundred eighty-nine million, twenty-two thousand, three hundred nine".