166016449 has 2 divisors, whose sum is σ = 166016450. Its totient is φ = 166016448.

The previous prime is 166016399. The next prime is 166016453. The reversal of 166016449 is 944610661.

166016449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143520400 + 22496049 = 11980^2 + 4743^2 .

It is a cyclic number.

It is not a de Polignac number, because 166016449 - 2¹³ = 166008257 is a prime.

It is a super-2 number, since 2×166016449² = 55122922677139202, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (166016489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83008224 + 83008225.

It is an arithmetic number, because the mean of its divisors is an integer number (83008225).

Almost surely, 2^166016449 is an apocalyptic number.

It is an amenable number.

166016449 is a deficient number, since it is larger than the sum of its proper divisors (1).

166016449 is an equidigital number, since it uses as much as digits as its factorization.

166016449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 166016449 is about 12884.7370559123. The cubic root of 166016449 is about 549.6046183171.

The spelling of 166016449 in words is "one hundred sixty-six million, sixteen thousand, four hundred forty-nine".