164670019 has 2 divisors, whose sum is σ = 164670020. Its totient is φ = 164670018.

The previous prime is 164670001. The next prime is 164670029. The reversal of 164670019 is 910076461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164670019 - 2⁹ = 164669507 is a prime.

It is a super-2 number, since 2×164670019² = 54232430314920722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (164670029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82335009 + 82335010.

It is an arithmetic number, because the mean of its divisors is an integer number (82335010).

Almost surely, 2^164670019 is an apocalyptic number.

164670019 is a deficient number, since it is larger than the sum of its proper divisors (1).

164670019 is an equidigital number, since it uses as much as digits as its factorization.

164670019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 164670019 is about 12832.3816573542. The cubic root of 164670019 is about 548.1147785136.

The spelling of 164670019 in words is "one hundred sixty-four million, six hundred seventy thousand, nineteen".