194426843 has 16 divisors (see below), whose sum is σ = 222626880. Its totient is φ = 168415104.

The previous prime is 194426839. The next prime is 194426857. The reversal of 194426843 is 348624491.

It is not a de Polignac number, because 194426843 - 2² = 194426839 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 194426843.

It is not an unprimeable number, because it can be changed into a prime (194426803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9713 + ... + 21981.

It is an arithmetic number, because the mean of its divisors is an integer number (13914180).

Almost surely, 2^194426843 is an apocalyptic number.

194426843 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

194426843 is a deficient number, since it is larger than the sum of its proper divisors (28200037).

194426843 is a wasteful number, since it uses less digits than its factorization.

194426843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12358.

The product of its digits is 165888, while the sum is 41.

The square root of 194426843 is about 13943.7026287855. The cubic root of 194426843 is about 579.3202927374.

The spelling of 194426843 in words is "one hundred ninety-four million, four hundred twenty-six thousand, eight hundred forty-three".