164868443 has 2 divisors, whose sum is σ = 164868444. Its totient is φ = 164868442.

The previous prime is 164868427. The next prime is 164868523. The reversal of 164868443 is 344868461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164868443 - 2⁴ = 164868427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 164868394 and 164868403.

It is not a weakly prime, because it can be changed into another prime (164861443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82434221 + 82434222.

It is an arithmetic number, because the mean of its divisors is an integer number (82434222).

Almost surely, 2^164868443 is an apocalyptic number.

164868443 is a deficient number, since it is larger than the sum of its proper divisors (1).

164868443 is an equidigital number, since it uses as much as digits as its factorization.

164868443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 442368, while the sum is 44.

The square root of 164868443 is about 12840.1107082455. The cubic root of 164868443 is about 548.3348458388.

The spelling of 164868443 in words is "one hundred sixty-four million, eight hundred sixty-eight thousand, four hundred forty-three".