164743967 has 2 divisors, whose sum is σ = 164743968. Its totient is φ = 164743966.

The previous prime is 164743933. The next prime is 164743979. The reversal of 164743967 is 769347461.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164743967 - 2¹⁶ = 164678431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164743067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82371983 + 82371984.

It is an arithmetic number, because the mean of its divisors is an integer number (82371984).

Almost surely, 2^164743967 is an apocalyptic number.

164743967 is a deficient number, since it is larger than the sum of its proper divisors (1).

164743967 is an equidigital number, since it uses as much as digits as its factorization.

164743967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 47.

The square root of 164743967 is about 12835.2626385283. The cubic root of 164743967 is about 548.1968131309.

The spelling of 164743967 in words is "one hundred sixty-four million, seven hundred forty-three thousand, nine hundred sixty-seven".