164868523 has 2 divisors, whose sum is σ = 164868524. Its totient is φ = 164868522.

The previous prime is 164868443. The next prime is 164868547. The reversal of 164868523 is 325868461.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164868523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 164868523.

It is not a weakly prime, because it can be changed into another prime (164868553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82434261 + 82434262.

It is an arithmetic number, because the mean of its divisors is an integer number (82434262).

Almost surely, 2^164868523 is an apocalyptic number.

164868523 is a deficient number, since it is larger than the sum of its proper divisors (1).

164868523 is an equidigital number, since it uses as much as digits as its factorization.

164868523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 276480, while the sum is 43.

The square root of 164868523 is about 12840.1138234830. The cubic root of 164868523 is about 548.3349345293.

The spelling of 164868523 in words is "one hundred sixty-four million, eight hundred sixty-eight thousand, five hundred twenty-three".