166167969 has 24 divisors (see below), whose sum is σ = 245745696. Its totient is φ = 99792000.

The previous prime is 166167961. The next prime is 166168001. The reversal of 166167969 is 969761661.

166167969 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 166167969 - 2³ = 166167961 is a prime.

It is a super-2 number, since 2×166167969² = 55223587843169922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166167961) 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, 38994 + ... + 43044.

It is an arithmetic number, because the mean of its divisors is an integer number (10239404).

Almost surely, 2^166167969 is an apocalyptic number.

It is an amenable number.

166167969 is a deficient number, since it is larger than the sum of its proper divisors (79577727).

166167969 is a wasteful number, since it uses less digits than its factorization.

166167969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4189 (or 4178 counting only the distinct ones).

The product of its digits is 734832, while the sum is 51.

The square root of 166167969 is about 12890.6155399965. The cubic root of 166167969 is about 549.7717719743.

The spelling of 166167969 in words is "one hundred sixty-six million, one hundred sixty-seven thousand, nine hundred sixty-nine".