166591488 has 176 divisors, whose sum is σ = 519839744. Its totient is φ = 46448640.

The previous prime is 166591471. The next prime is 166591511. The reversal of 166591488 is 884195661.

166591488 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent 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, 1311681 + ... + 1311807.

Almost surely, 2^166591488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166591488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259919872).

166591488 is an abundant number, since it is smaller than the sum of its proper divisors (353248256).

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

166591488 is a wasteful number, since it uses less digits than its factorization.

166591488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218 (or 200 counting only the distinct ones).

The product of its digits is 414720, while the sum is 48.

The square root of 166591488 is about 12907.0325017023. The cubic root of 166591488 is about 550.2384508754.

The spelling of 166591488 in words is "one hundred sixty-six million, five hundred ninety-one thousand, four hundred eighty-eight".