194942232829 has 2 divisors, whose sum is σ = 194942232830. Its totient is φ = 194942232828.

The previous prime is 194942232809. The next prime is 194942232847. The reversal of 194942232829 is 928232249491.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111766519225 + 83175713604 = 334315^2 + 288402^2 .

It is a cyclic number.

It is not a de Polignac number, because 194942232829 - 2²³ = 194933844221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 194942232829.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194942232809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97471116414 + 97471116415.

It is an arithmetic number, because the mean of its divisors is an integer number (97471116415).

Almost surely, 2^194942232829 is an apocalyptic number.

It is an amenable number.

194942232829 is a deficient number, since it is larger than the sum of its proper divisors (1).

194942232829 is an equidigital number, since it uses as much as digits as its factorization.

194942232829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4478976, while the sum is 55.

The spelling of 194942232829 in words is "one hundred ninety-four billion, nine hundred forty-two million, two hundred thirty-two thousand, eight hundred twenty-nine".