163381853 has 12 divisors (see below), whose sum is σ = 171469620. Its totient is φ = 155473920.

The previous prime is 163381847. The next prime is 163381859. The reversal of 163381853 is 358183361.

163381853 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (163381847) and next prime (163381859).

It can be written as a sum of positive squares in 6 ways, for example, as 10067929 + 153313924 = 3173^2 + 12382^2 .

It is not a de Polignac number, because 163381853 - 2⁴ = 163381837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163381859) 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, 677813 + ... + 678053.

It is an arithmetic number, because the mean of its divisors is an integer number (14289135).

Almost surely, 2^163381853 is an apocalyptic number.

It is an amenable number.

163381853 is a deficient number, since it is larger than the sum of its proper divisors (8087767).

163381853 is an frugal number, since it uses more digits than its factorization.

163381853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608 (or 367 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 163381853 is about 12782.0911043538. The cubic root of 163381853 is about 546.6817874973.

The spelling of 163381853 in words is "one hundred sixty-three million, three hundred eighty-one thousand, eight hundred fifty-three".