166998492 has 72 divisors (see below), whose sum is σ = 443963520. Its totient is φ = 52826400.

The previous prime is 166998451. The next prime is 166998499. The reversal of 166998492 is 294899661.

166998492 is a `hidden beast` number, since 1 + 6 + 69 + 98 + 492 = 666.

166998492 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166998499) 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, 114367 + ... + 115817.

It is an arithmetic number, because the mean of its divisors is an integer number (6166160).

Almost surely, 2^166998492 is an apocalyptic number.

166998492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166998492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221981760).

166998492 is an abundant number, since it is smaller than the sum of its proper divisors (276965028).

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

166998492 is a wasteful number, since it uses less digits than its factorization.

166998492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623 (or 1618 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 166998492 is about 12922.7896369166. The cubic root of 166998492 is about 550.6861870743.

The spelling of 166998492 in words is "one hundred sixty-six million, nine hundred ninety-eight thousand, four hundred ninety-two".