194112543 has 4 divisors (see below), whose sum is σ = 258816728. Its totient is φ = 129408360.

The previous prime is 194112517. The next prime is 194112547. The reversal of 194112543 is 345211491.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 194112543 - 2¹⁸ = 193850399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 194112543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194112547) 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, 32352088 + ... + 32352093.

It is an arithmetic number, because the mean of its divisors is an integer number (64704182).

Almost surely, 2^194112543 is an apocalyptic number.

194112543 is a deficient number, since it is larger than the sum of its proper divisors (64704185).

194112543 is an equidigital number, since it uses as much as digits as its factorization.

194112543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64704184.

The product of its digits is 4320, while the sum is 30.

The square root of 194112543 is about 13932.4277496781. The cubic root of 194112543 is about 579.0079583444.

The spelling of 194112543 in words is "one hundred ninety-four million, one hundred twelve thousand, five hundred forty-three".