2323640989 has 2 divisors, whose sum is σ = 2323640990. Its totient is φ = 2323640988.

The previous prime is 2323640981. The next prime is 2323641013. The reversal of 2323640989 is 9890463232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1414136025 + 909504964 = 37605^2 + 30158^2 .

It is a cyclic number.

It is not a de Polignac number, because 2323640989 - 2³ = 2323640981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2323640981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1161820494 + 1161820495.

It is an arithmetic number, because the mean of its divisors is an integer number (1161820495).

Almost surely, 2^2323640989 is an apocalyptic number.

It is an amenable number.

2323640989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2323640989 is an equidigital number, since it uses as much as digits as its factorization.

2323640989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 46.

The square root of 2323640989 is about 48204.1594574576. The cubic root of 2323640989 is about 1324.5133590142.

The spelling of 2323640989 in words is "two billion, three hundred twenty-three million, six hundred forty thousand, nine hundred eighty-nine".