166953049 has 2 divisors, whose sum is σ = 166953050. Its totient is φ = 166953048.

The previous prime is 166953043. The next prime is 166953091. The reversal of 166953049 is 940359661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119246400 + 47706649 = 10920^2 + 6907^2 .

It is an emirp because it is prime and its reverse (940359661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166953049 - 2⁷ = 166952921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166952996 and 166953014.

It is not a weakly prime, because it can be changed into another prime (166953043) 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, 83476524 + 83476525.

It is an arithmetic number, because the mean of its divisors is an integer number (83476525).

Almost surely, 2^166953049 is an apocalyptic number.

It is an amenable number.

166953049 is a deficient number, since it is larger than the sum of its proper divisors (1).

166953049 is an equidigital number, since it uses as much as digits as its factorization.

166953049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 166953049 is about 12921.0312668920. The cubic root of 166953049 is about 550.6362323266.

The spelling of 166953049 in words is "one hundred sixty-six million, nine hundred fifty-three thousand, forty-nine".