166938849 has 24 divisors (see below), whose sum is σ = 300635712. Its totient is φ = 86721120.

The previous prime is 166938803. The next prime is 166938851. The reversal of 166938849 is 948839661.

166938849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 166938849 - 2⁹ = 166938337 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 166938795 and 166938804.

It is not an unprimeable number, because it can be changed into a prime (166938869) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119754 + ... + 121139.

It is an arithmetic number, because the mean of its divisors is an integer number (12526488).

Almost surely, 2^166938849 is an apocalyptic number.

It is an amenable number.

166938849 is a deficient number, since it is larger than the sum of its proper divisors (133696863).

166938849 is a wasteful number, since it uses less digits than its factorization.

166938849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240917 (or 240914 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 166938849 is about 12920.4817634638. The cubic root of 166938849 is about 550.6206206397.

The spelling of 166938849 in words is "one hundred sixty-six million, nine hundred thirty-eight thousand, eight hundred forty-nine".