163273844 has 12 divisors (see below), whose sum is σ = 289643844. Its totient is φ = 80518464.

The previous prime is 163273843. The next prime is 163273853. The reversal of 163273844 is 448372361.

It can be written as a sum of positive squares in 2 ways, for example, as 57183844 + 106090000 = 7562^2 + 10300^2 .

It is a junction number, because it is equal to n+sod(n) for n = 163273798 and 163273807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163273843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279287 + ... + 279870.

It is an arithmetic number, because the mean of its divisors is an integer number (24136987).

Almost surely, 2^163273844 is an apocalyptic number.

It is an amenable number.

163273844 is a deficient number, since it is larger than the sum of its proper divisors (126370000).

163273844 is a wasteful number, since it uses less digits than its factorization.

163273844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559234 (or 559232 counting only the distinct ones).

The product of its digits is 96768, while the sum is 38.

The square root of 163273844 is about 12777.8653929363. The cubic root of 163273844 is about 546.5612935574.

The spelling of 163273844 in words is "one hundred sixty-three million, two hundred seventy-three thousand, eight hundred forty-four".