166312926 has 80 divisors (see below), whose sum is σ = 404689824. Its totient is φ = 50746176.

The previous prime is 166312919. The next prime is 166312973. The reversal of 166312926 is 629213661.

It is a happy number.

166312926 is a `hidden beast` number, since 16 + 631 + 2 + 9 + 2 + 6 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 330391 + ... + 330893.

Almost surely, 2^166312926 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166312926, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202344912).

166312926 is an abundant number, since it is smaller than the sum of its proper divisors (238376898).

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

166312926 is a wasteful number, since it uses less digits than its factorization.

166312926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687 (or 678 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 166312926 is about 12896.2368929855. The cubic root of 166312926 is about 549.9315903896.

The spelling of 166312926 in words is "one hundred sixty-six million, three hundred twelve thousand, nine hundred twenty-six".