166048969 has 2 divisors, whose sum is σ = 166048970. Its totient is φ = 166048968.

The previous prime is 166048921. The next prime is 166049003. The reversal of 166048969 is 969840661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138956944 + 27092025 = 11788^2 + 5205^2 .

It is an emirp because it is prime and its reverse (969840661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166048969 - 2¹⁷ = 165917897 is a prime.

It is a super-2 number, since 2×166048969² = 55144520211925922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (166040969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83024484 + 83024485.

It is an arithmetic number, because the mean of its divisors is an integer number (83024485).

Almost surely, 2^166048969 is an apocalyptic number.

It is an amenable number.

166048969 is a deficient number, since it is larger than the sum of its proper divisors (1).

166048969 is an equidigital number, since it uses as much as digits as its factorization.

166048969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 49.

The square root of 166048969 is about 12885.9989523513. The cubic root of 166048969 is about 549.6405022620.

The spelling of 166048969 in words is "one hundred sixty-six million, forty-eight thousand, nine hundred sixty-nine".