164243203 has 2 divisors, whose sum is σ = 164243204. Its totient is φ = 164243202.

The previous prime is 164243179. The next prime is 164243221. The reversal of 164243203 is 302342461.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164243203 is a prime.

It is not a weakly prime, because it can be changed into another prime (164243243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82121601 + 82121602.

It is an arithmetic number, because the mean of its divisors is an integer number (82121602).

Almost surely, 2^164243203 is an apocalyptic number.

164243203 is a deficient number, since it is larger than the sum of its proper divisors (1).

164243203 is an equidigital number, since it uses as much as digits as its factorization.

164243203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 164243203 is about 12815.7404390070. The cubic root of 164243203 is about 547.6408072469.

Adding to 164243203 its reverse (302342461), we get a palindrome (466585664).

The spelling of 164243203 in words is "one hundred sixty-four million, two hundred forty-three thousand, two hundred three".