163861368 has 128 divisors (see below), whose sum is σ = 489888000. Its totient is φ = 45086720.

The previous prime is 163861363. The next prime is 163861391. The reversal of 163861368 is 863168361.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163861363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129523 + ... + 130781.

It is an arithmetic number, because the mean of its divisors is an integer number (3827250).

Almost surely, 2^163861368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163861368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244944000).

163861368 is an abundant number, since it is smaller than the sum of its proper divisors (326026632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163861368 is a wasteful number, since it uses less digits than its factorization.

163861368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325 (or 1321 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 163861368 is about 12800.8346602868. The cubic root of 163861368 is about 547.2160901616.

The spelling of 163861368 in words is "one hundred sixty-three million, eight hundred sixty-one thousand, three hundred sixty-eight".