2164434523 has 2 divisors, whose sum is σ = 2164434524. Its totient is φ = 2164434522.

The previous prime is 2164434497. The next prime is 2164434551. The reversal of 2164434523 is 3254344612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2164434523 - 2⁹ = 2164434011 is a prime.

It is not a weakly prime, because it can be changed into another prime (2164434593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082217261 + 1082217262.

It is an arithmetic number, because the mean of its divisors is an integer number (1082217262).

Almost surely, 2^2164434523 is an apocalyptic number.

2164434523 is a deficient number, since it is larger than the sum of its proper divisors (1).

2164434523 is an equidigital number, since it uses as much as digits as its factorization.

2164434523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 34.

The square root of 2164434523 is about 46523.4835647547. The cubic root of 2164434523 is about 1293.5448287898.

The spelling of 2164434523 in words is "two billion, one hundred sixty-four million, four hundred thirty-four thousand, five hundred twenty-three".