163166489 has 8 divisors (see below), whose sum is σ = 167312520. Its totient is φ = 159060096.

The previous prime is 163166483. The next prime is 163166503. The reversal of 163166489 is 984661361.

It is a happy number.

163166489 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 4 ways, for example, as 79352464 + 83814025 = 8908^2 + 9155^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 163166489 - 2⁸ = 163166233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163166483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1484 + ... + 18125.

It is an arithmetic number, because the mean of its divisors is an integer number (20914065).

Almost surely, 2^163166489 is an apocalyptic number.

It is an amenable number.

163166489 is a deficient number, since it is larger than the sum of its proper divisors (4146031).

163166489 is a wasteful number, since it uses less digits than its factorization.

163166489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19819.

The product of its digits is 186624, while the sum is 44.

The square root of 163166489 is about 12773.6638831621. The cubic root of 163166489 is about 546.4414765452.

The spelling of 163166489 in words is "one hundred sixty-three million, one hundred sixty-six thousand, four hundred eighty-nine".