164869693 has 2 divisors, whose sum is σ = 164869694. Its totient is φ = 164869692.

The previous prime is 164869667. The next prime is 164869699. The reversal of 164869693 is 396968461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157703364 + 7166329 = 12558^2 + 2677^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164869693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 164869693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164869699) 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, 82434846 + 82434847.

It is an arithmetic number, because the mean of its divisors is an integer number (82434847).

Almost surely, 2^164869693 is an apocalyptic number.

It is an amenable number.

164869693 is a deficient number, since it is larger than the sum of its proper divisors (1).

164869693 is an equidigital number, since it uses as much as digits as its factorization.

164869693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1679616, while the sum is 52.

The square root of 164869693 is about 12840.1593837460. The cubic root of 164869693 is about 548.3362316242.

The spelling of 164869693 in words is "one hundred sixty-four million, eight hundred sixty-nine thousand, six hundred ninety-three".