166163452 has 48 divisors (see below), whose sum is σ = 359432640. Its totient is φ = 65452032.

The previous prime is 166163429. The next prime is 166163453. The reversal of 166163452 is 254361661.

It is a super-2 number, since 2×166163452² = 55220585561112608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166163453) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 97068 + ... + 98764.

It is an arithmetic number, because the mean of its divisors is an integer number (7488180).

Almost surely, 2^166163452 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 166163452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179716320).

166163452 is an abundant number, since it is smaller than the sum of its proper divisors (193269188).

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

166163452 is a wasteful number, since it uses less digits than its factorization.

166163452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990 (or 1988 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 166163452 is about 12890.4403338288. The cubic root of 166163452 is about 549.7667903852.

The spelling of 166163452 in words is "one hundred sixty-six million, one hundred sixty-three thousand, four hundred fifty-two".