164342999 has 2 divisors, whose sum is σ = 164343000. Its totient is φ = 164342998.

The previous prime is 164342987. The next prime is 164343001. The reversal of 164342999 is 999243461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164342999 - 2¹² = 164338903 is a prime.

It is a Sophie Germain prime.

Together with 164343001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164342939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82171499 + 82171500.

It is an arithmetic number, because the mean of its divisors is an integer number (82171500).

Almost surely, 2^164342999 is an apocalyptic number.

164342999 is a deficient number, since it is larger than the sum of its proper divisors (1).

164342999 is an equidigital number, since it uses as much as digits as its factorization.

164342999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 419904, while the sum is 47.

The square root of 164342999 is about 12819.6333410905. The cubic root of 164342999 is about 547.7517023415.

The spelling of 164342999 in words is "one hundred sixty-four million, three hundred forty-two thousand, nine hundred ninety-nine".