194426808999 has 32 divisors (see below), whose sum is σ = 265506647040. Its totient is φ = 126498801792.

The previous prime is 194426808997. The next prime is 194426809067. The reversal of 194426808999 is 999808624491.

It is not a de Polignac number, because 194426808999 - 2¹ = 194426808997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194426808991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127659652 + ... + 127661174.

It is an arithmetic number, because the mean of its divisors is an integer number (8297082720).

Almost surely, 2^194426808999 is an apocalyptic number.

194426808999 is a deficient number, since it is larger than the sum of its proper divisors (71079838041).

194426808999 is a wasteful number, since it uses less digits than its factorization.

194426808999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3559.

The product of its (nonzero) digits is 80621568, while the sum is 69.

The spelling of 194426808999 in words is "one hundred ninety-four billion, four hundred twenty-six million, eight hundred eight thousand, nine hundred ninety-nine".