163829848081 has 9 divisors (see below), whose sum is σ = 167746269819. Its totient is φ = 160002851736.

The previous prime is 163829848051. The next prime is 163829848087. The reversal of 163829848081 is 180848928361.

It is a happy number.

The square root of 163829848081 is 404759.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 163551492225 + 278355856 = 404415^2 + 16684^2 .

It is not a de Polignac number, because 163829848081 - 2²⁷ = 163695630353 is a prime.

It is a super-2 number, since 2×163829848081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163829848087) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 17399931 + ... + 17409343.

Almost surely, 2^163829848081 is an apocalyptic number.

163829848081 is the 404759-th square number.

163829848081 is the 202380-th centered octagonal number.

It is an amenable number.

163829848081 is a deficient number, since it is larger than the sum of its proper divisors (3916421738).

163829848081 is an frugal number, since it uses more digits than its factorization.

163829848081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18912 (or 9456 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 58.

The spelling of 163829848081 in words is "one hundred sixty-three billion, eight hundred twenty-nine million, eight hundred forty-eight thousand, eighty-one".