166922137 has 2 divisors, whose sum is σ = 166922138. Its totient is φ = 166922136.

The previous prime is 166922117. The next prime is 166922153. The reversal of 166922137 is 731229661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162715536 + 4206601 = 12756^2 + 2051^2 .

It is a cyclic number.

It is not a de Polignac number, because 166922137 - 2⁷ = 166922009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166922096 and 166922105.

It is not a weakly prime, because it can be changed into another prime (166922117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83461068 + 83461069.

It is an arithmetic number, because the mean of its divisors is an integer number (83461069).

Almost surely, 2^166922137 is an apocalyptic number.

It is an amenable number.

166922137 is a deficient number, since it is larger than the sum of its proper divisors (1).

166922137 is an equidigital number, since it uses as much as digits as its factorization.

166922137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 37.

The square root of 166922137 is about 12919.8350221665. The cubic root of 166922137 is about 550.6022460892.

The spelling of 166922137 in words is "one hundred sixty-six million, nine hundred twenty-two thousand, one hundred thirty-seven".