166269049 has 2 divisors, whose sum is σ = 166269050. Its totient is φ = 166269048.

The previous prime is 166269031. The next prime is 166269067. The reversal of 166269049 is 940962661.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (166269031) and next prime (166269067).

It can be written as a sum of positive squares in only one way, i.e., 124434025 + 41835024 = 11155^2 + 6468^2 .

It is an emirp because it is prime and its reverse (940962661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166269049 - 2⁵ = 166269017 is a prime.

It is a super-3 number, since 3×166269049³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 166268996 and 166269014.

It is not a weakly prime, because it can be changed into another prime (166269029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83134524 + 83134525.

It is an arithmetic number, because the mean of its divisors is an integer number (83134525).

Almost surely, 2^166269049 is an apocalyptic number.

It is an amenable number.

166269049 is a deficient number, since it is larger than the sum of its proper divisors (1).

166269049 is an equidigital number, since it uses as much as digits as its factorization.

166269049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 166269049 is about 12894.5356256051. The cubic root of 166269049 is about 549.8832247950.

The spelling of 166269049 in words is "one hundred sixty-six million, two hundred sixty-nine thousand, forty-nine".