163745543 has 16 divisors (see below), whose sum is σ = 179105472. Its totient is φ = 148800000.

The previous prime is 163745539. The next prime is 163745563. The reversal of 163745543 is 345547361.

It is a cyclic number.

It is not a de Polignac number, because 163745543 - 2² = 163745539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 163745497 and 163745506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163745563) 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 15 ways as a sum of consecutive naturals, for example, 408143 + ... + 408543.

It is an arithmetic number, because the mean of its divisors is an integer number (11194092).

Almost surely, 2^163745543 is an apocalyptic number.

163745543 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

163745543 is a deficient number, since it is larger than the sum of its proper divisors (15359929).

163745543 is a wasteful number, since it uses less digits than its factorization.

163745543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826.

The product of its digits is 151200, while the sum is 38.

The square root of 163745543 is about 12796.3097414841. The cubic root of 163745543 is about 547.0871269941.

The spelling of 163745543 in words is "one hundred sixty-three million, seven hundred forty-five thousand, five hundred forty-three".