164165069 has 2 divisors, whose sum is σ = 164165070. Its totient is φ = 164165068.

The previous prime is 164165059. The next prime is 164165083. The reversal of 164165069 is 960561461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154008100 + 10156969 = 12410^2 + 3187^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164165069 is a prime.

It is a super-2 number, since 2×164165069² = 53900339759549522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164165059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82082534 + 82082535.

It is an arithmetic number, because the mean of its divisors is an integer number (82082535).

Almost surely, 2^164165069 is an apocalyptic number.

It is an amenable number.

164165069 is a deficient number, since it is larger than the sum of its proper divisors (1).

164165069 is an equidigital number, since it uses as much as digits as its factorization.

164165069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 164165069 is about 12812.6917156388. The cubic root of 164165069 is about 547.5539519958.

The spelling of 164165069 in words is "one hundred sixty-four million, one hundred sixty-five thousand, sixty-nine".