163743843849 has 64 divisors (see below), whose sum is σ = 235458263040. Its totient is φ = 101025792000.

The previous prime is 163743843839. The next prime is 163743843863. The reversal of 163743843849 is 948348347361.

It is not a de Polignac number, because 163743843849 - 2⁷ = 163743843721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 163743843792 and 163743843801.

It is not an unprimeable number, because it can be changed into a prime (163743843839) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 78382797 + ... + 78384885.

It is an arithmetic number, because the mean of its divisors is an integer number (3679035360).

Almost surely, 2^163743843849 is an apocalyptic number.

It is an amenable number.

163743843849 is a deficient number, since it is larger than the sum of its proper divisors (71714419191).

163743843849 is a wasteful number, since it uses less digits than its factorization.

163743843849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2562.

The product of its digits is 41803776, while the sum is 60.

The spelling of 163743843849 in words is "one hundred sixty-three billion, seven hundred forty-three million, eight hundred forty-three thousand, eight hundred forty-nine".