164356351969 has 2 divisors, whose sum is σ = 164356351970. Its totient is φ = 164356351968.

The previous prime is 164356351963. The next prime is 164356351997. The reversal of 164356351969 is 969153653461.

It is a happy number.

164356351969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163745669025 + 610682944 = 404655^2 + 24712^2 .

It is a cyclic number.

It is not a de Polignac number, because 164356351969 - 2⁹ = 164356351457 is a prime.

It is a super-2 number, since 2×164356351969² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (164356351963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82178175984 + 82178175985.

It is an arithmetic number, because the mean of its divisors is an integer number (82178175985).

Almost surely, 2^164356351969 is an apocalyptic number.

It is an amenable number.

164356351969 is a deficient number, since it is larger than the sum of its proper divisors (1).

164356351969 is an equidigital number, since it uses as much as digits as its factorization.

164356351969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15746400, while the sum is 58.

The spelling of 164356351969 in words is "one hundred sixty-four billion, three hundred fifty-six million, three hundred fifty-one thousand, nine hundred sixty-nine".