2164245623 has 2 divisors, whose sum is σ = 2164245624. Its totient is φ = 2164245622.

The previous prime is 2164245533. The next prime is 2164245641. The reversal of 2164245623 is 3265424612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2164245623 - 2²² = 2160051319 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2164245683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082122811 + 1082122812.

It is an arithmetic number, because the mean of its divisors is an integer number (1082122812).

Almost surely, 2^2164245623 is an apocalyptic number.

2164245623 is a deficient number, since it is larger than the sum of its proper divisors (1).

2164245623 is an equidigital number, since it uses as much as digits as its factorization.

2164245623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 35.

The square root of 2164245623 is about 46521.4533629378. The cubic root of 2164245623 is about 1293.5071965238.

The spelling of 2164245623 in words is "two billion, one hundred sixty-four million, two hundred forty-five thousand, six hundred twenty-three".