166831488 has 80 divisors (see below), whose sum is σ = 496518660. Its totient is φ = 55607040.

The previous prime is 166831487. The next prime is 166831493. The reversal of 166831488 is 884138661.

It is a happy number.

166831488 is a `hidden beast` number, since 166 + 8 + 3 + 1 + 488 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166831487) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2323 + ... + 18413.

Almost surely, 2^166831488 is an apocalyptic number.

166831488 is a gapful number since it is divisible by the number (18) 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 166831488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248259330).

166831488 is an abundant number, since it is smaller than the sum of its proper divisors (329687172).

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

166831488 is an equidigital number, since it uses as much as digits as its factorization.

166831488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16117 (or 16096 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 166831488 is about 12916.3264127228. The cubic root of 166831488 is about 550.5025577323.

The spelling of 166831488 in words is "one hundred sixty-six million, eight hundred thirty-one thousand, four hundred eighty-eight".