166053879 has 12 divisors (see below), whose sum is σ = 239970432. Its totient is φ = 110649600.

The previous prime is 166053871. The next prime is 166053889. The reversal of 166053879 is 978350661.

It is a happy number.

166053879 is a `hidden beast` number, since 1 + 6 + 605 + 38 + 7 + 9 = 666.

It is not a de Polignac number, because 166053879 - 2³ = 166053871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166053871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27799 + ... + 33239.

It is an arithmetic number, because the mean of its divisors is an integer number (19997536).

Almost surely, 2^166053879 is an apocalyptic number.

166053879 is a deficient number, since it is larger than the sum of its proper divisors (73916553).

166053879 is a wasteful number, since it uses less digits than its factorization.

166053879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8838 (or 8835 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 166053879 is about 12886.1894677985. The cubic root of 166053879 is about 549.6459197567.

The spelling of 166053879 in words is "one hundred sixty-six million, fifty-three thousand, eight hundred seventy-nine".