194426811 has 20 divisors (see below), whose sum is σ = 293167512. Its totient is φ = 128400768.

The previous prime is 194426809. The next prime is 194426833. The reversal of 194426811 is 118624491.

It is not a de Polignac number, because 194426811 - 2¹ = 194426809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (194426891) 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 19 ways as a sum of consecutive naturals, for example, 2550 + ... + 19883.

Almost surely, 2^194426811 is an apocalyptic number.

194426811 is a deficient number, since it is larger than the sum of its proper divisors (98740701).

194426811 is a wasteful number, since it uses less digits than its factorization.

194426811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22552 (or 22543 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 194426811 is about 13943.7014813141. The cubic root of 194426811 is about 579.3202609547.

The spelling of 194426811 in words is "one hundred ninety-four million, four hundred twenty-six thousand, eight hundred eleven".