1609309223 has 2 divisors, whose sum is σ = 1609309224. Its totient is φ = 1609309222.

The previous prime is 1609309213. The next prime is 1609309243. The reversal of 1609309223 is 3229039061.

It is a weak prime.

It is an emirp because it is prime and its reverse (3229039061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1609309223 - 2¹⁸ = 1609047079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1609309213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 804654611 + 804654612.

It is an arithmetic number, because the mean of its divisors is an integer number (804654612).

Almost surely, 2^1609309223 is an apocalyptic number.

1609309223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1609309223 is an equidigital number, since it uses as much as digits as its factorization.

1609309223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 1609309223 is about 40116.1965171176. The cubic root of 1609309223 is about 1171.8710712406.

The spelling of 1609309223 in words is "one billion, six hundred nine million, three hundred nine thousand, two hundred twenty-three".