1669166167 has 2 divisors, whose sum is σ = 1669166168. Its totient is φ = 1669166166.

The previous prime is 1669166123. The next prime is 1669166171. The reversal of 1669166167 is 7616619661.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1669166167 - 2²⁷ = 1534948439 is a prime.

It is a super-2 number, since 2×1669166167² = 5572231386114943778, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1669166167.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1669166117) 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, 834583083 + 834583084.

It is an arithmetic number, because the mean of its divisors is an integer number (834583084).

Almost surely, 2^1669166167 is an apocalyptic number.

1669166167 is a deficient number, since it is larger than the sum of its proper divisors (1).

1669166167 is an equidigital number, since it uses as much as digits as its factorization.

1669166167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 49.

The square root of 1669166167 is about 40855.4300797336. The cubic root of 1669166167 is about 1186.2235025207.

The spelling of 1669166167 in words is "one billion, six hundred sixty-nine million, one hundred sixty-six thousand, one hundred sixty-seven".