166434172 has 6 divisors (see below), whose sum is σ = 291259808. Its totient is φ = 83217084.

The previous prime is 166434157. The next prime is 166434181. The reversal of 166434172 is 271434661.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20804268 + ... + 20804275.

Almost surely, 2^166434172 is an apocalyptic number.

It is an amenable number.

166434172 is a deficient number, since it is larger than the sum of its proper divisors (124825636).

166434172 is a wasteful number, since it uses less digits than its factorization.

166434172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41608547 (or 41608545 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 166434172 is about 12900.9368652048. The cubic root of 166434172 is about 550.0651955774.

The spelling of 166434172 in words is "one hundred sixty-six million, four hundred thirty-four thousand, one hundred seventy-two".