163857850 has 48 divisors (see below), whose sum is σ = 332478720. Its totient is φ = 59716800.

The previous prime is 163857791. The next prime is 163857851. The reversal of 163857850 is 58758361.

It is a junction number, because it is equal to n+sod(n) for n = 163857797 and 163857806.

It is not an unprimeable number, because it can be changed into a prime (163857851) 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 23 ways as a sum of consecutive naturals, for example, 49755 + ... + 52945.

It is an arithmetic number, because the mean of its divisors is an integer number (6926640).

Almost surely, 2^163857850 is an apocalyptic number.

163857850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163857850 is an abundant number, since it is smaller than the sum of its proper divisors (168620870).

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

163857850 is a wasteful number, since it uses less digits than its factorization.

163857850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3295 (or 3290 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 163857850 is about 12800.6972466347. The cubic root of 163857850 is about 547.2121740057.

The spelling of 163857850 in words is "one hundred sixty-three million, eight hundred fifty-seven thousand, eight hundred fifty".