163843340 has 12 divisors (see below), whose sum is σ = 344071056. Its totient is φ = 65537328.

The previous prime is 163843321. The next prime is 163843349. The reversal of 163843340 is 43348361.

It is a junction number, because it is equal to n+sod(n) for n = 163843297 and 163843306.

It is not an unprimeable number, because it can be changed into a prime (163843349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4096064 + ... + 4096103.

It is an arithmetic number, because the mean of its divisors is an integer number (28672588).

Almost surely, 2^163843340 is an apocalyptic number.

163843340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163843340 is an abundant number, since it is smaller than the sum of its proper divisors (180227716).

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

163843340 is a wasteful number, since it uses less digits than its factorization.

163843340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8192176 (or 8192174 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 163843340 is about 12800.1304680851. The cubic root of 163843340 is about 547.1960212183.

The spelling of 163843340 in words is "one hundred sixty-three million, eight hundred forty-three thousand, three hundred forty".