166461426 has 32 divisors (see below), whose sum is σ = 370440000. Its totient is φ = 55408320.

The previous prime is 166461401. The next prime is 166461431. The reversal of 166461426 is 624164661.

166461426 is a `hidden beast` number, since 1 + 6 + 646 + 1 + 4 + 2 + 6 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45825 + ... + 49323.

It is an arithmetic number, because the mean of its divisors is an integer number (11576250).

Almost surely, 2^166461426 is an apocalyptic number.

166461426 is an abundant number, since it is smaller than the sum of its proper divisors (203978574).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166461426 is a wasteful number, since it uses less digits than its factorization.

166461426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4391 (or 4385 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 166461426 is about 12901.9931018428. The cubic root of 166461426 is about 550.0952187760.

The spelling of 166461426 in words is "one hundred sixty-six million, four hundred sixty-one thousand, four hundred twenty-six".