163885841 has 12 divisors (see below), whose sum is σ = 191754612. Its totient is φ = 139654368.

The previous prime is 163885817. The next prime is 163885889. The reversal of 163885841 is 148588361.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 151782400 + 12103441 = 12320^2 + 3479^2 .

It is not a de Polignac number, because 163885841 - 2²² = 159691537 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 163885792 and 163885801.

It is not an unprimeable number, because it can be changed into a prime (163885541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1190 + ... + 18143.

It is an arithmetic number, because the mean of its divisors is an integer number (15979551).

Almost surely, 2^163885841 is an apocalyptic number.

It is an amenable number.

163885841 is a deficient number, since it is larger than the sum of its proper divisors (27868771).

163885841 is a wasteful number, since it uses less digits than its factorization.

163885841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19520 (or 19513 counting only the distinct ones).

The product of its digits is 184320, while the sum is 44.

The square root of 163885841 is about 12801.7905388270. The cubic root of 163885841 is about 547.2433313857.

The spelling of 163885841 in words is "one hundred sixty-three million, eight hundred eighty-five thousand, eight hundred forty-one".