168166039 has 2 divisors, whose sum is σ = 168166040. Its totient is φ = 168166038.

The previous prime is 168166013. The next prime is 168166043. The reversal of 168166039 is 930661861.

It is a strong prime.

It is an emirp because it is prime and its reverse (930661861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 168166039 - 2⁷ = 168165911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 168165992 and 168166010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168166049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84083019 + 84083020.

It is an arithmetic number, because the mean of its divisors is an integer number (84083020).

Almost surely, 2^168166039 is an apocalyptic number.

168166039 is a deficient number, since it is larger than the sum of its proper divisors (1).

168166039 is an equidigital number, since it uses as much as digits as its factorization.

168166039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 168166039 is about 12967.8849084961. The cubic root of 168166039 is about 551.9665567763.

The spelling of 168166039 in words is "one hundred sixty-eight million, one hundred sixty-six thousand, thirty-nine".