164380669 has 2 divisors, whose sum is σ = 164380670. Its totient is φ = 164380668.

The previous prime is 164380651. The next prime is 164380673. The reversal of 164380669 is 966083461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115562500 + 48818169 = 10750^2 + 6987^2 .

It is a cyclic number.

It is not a de Polignac number, because 164380669 - 2²⁷ = 30162941 is a prime.

It is a super-2 number, since 2×164380669² = 54042008681775122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164380639) 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, 82190334 + 82190335.

It is an arithmetic number, because the mean of its divisors is an integer number (82190335).

Almost surely, 2^164380669 is an apocalyptic number.

It is an amenable number.

164380669 is a deficient number, since it is larger than the sum of its proper divisors (1).

164380669 is an equidigital number, since it uses as much as digits as its factorization.

164380669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 164380669 is about 12821.1024876958. The cubic root of 164380669 is about 547.7935502458.

The spelling of 164380669 in words is "one hundred sixty-four million, three hundred eighty thousand, six hundred sixty-nine".