166529849 has 2 divisors, whose sum is σ = 166529850. Its totient is φ = 166529848.

The previous prime is 166529827. The next prime is 166529879. The reversal of 166529849 is 948925661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142372624 + 24157225 = 11932^2 + 4915^2 .

It is a cyclic number.

It is not a de Polignac number, because 166529849 - 2¹⁶ = 166464313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166529797 and 166529806.

It is not a weakly prime, because it can be changed into another prime (166529879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83264924 + 83264925.

It is an arithmetic number, because the mean of its divisors is an integer number (83264925).

Almost surely, 2^166529849 is an apocalyptic number.

It is an amenable number.

166529849 is a deficient number, since it is larger than the sum of its proper divisors (1).

166529849 is an equidigital number, since it uses as much as digits as its factorization.

166529849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 50.

The square root of 166529849 is about 12904.6444739869. The cubic root of 166529849 is about 550.1705795971.

The spelling of 166529849 in words is "one hundred sixty-six million, five hundred twenty-nine thousand, eight hundred forty-nine".