163783845 has 24 divisors (see below), whose sum is σ = 288134496. Its totient is φ = 86046048.

The previous prime is 163783843. The next prime is 163783849. The reversal of 163783845 is 548387361.

163783845 is a `hidden beast` number, since 1 + 637 + 8 + 3 + 8 + 4 + 5 = 666.

It is not a de Polignac number, because 163783845 - 2¹ = 163783843 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 163783845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163783843) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24147 + ... + 30176.

It is an arithmetic number, because the mean of its divisors is an integer number (12005604).

Almost surely, 2^163783845 is an apocalyptic number.

163783845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163783845 is a deficient number, since it is larger than the sum of its proper divisors (124350651).

163783845 is a wasteful number, since it uses less digits than its factorization.

163783845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54401 (or 54398 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 163783845 is about 12797.8062573239. The cubic root of 163783845 is about 547.1297803637.

The spelling of 163783845 in words is "one hundred sixty-three million, seven hundred eighty-three thousand, eight hundred forty-five".