20194061399 has 2 divisors, whose sum is σ = 20194061400. Its totient is φ = 20194061398.

The previous prime is 20194061383. The next prime is 20194061417. The reversal of 20194061399 is 99316049102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20194061399 - 2⁴ = 20194061383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20194061999) 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 as a sum of consecutive naturals, namely, 10097030699 + 10097030700.

It is an arithmetic number, because the mean of its divisors is an integer number (10097030700).

Almost surely, 2^20194061399 is an apocalyptic number.

20194061399 is a deficient number, since it is larger than the sum of its proper divisors (1).

20194061399 is an equidigital number, since it uses as much as digits as its factorization.

20194061399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 44.

The spelling of 20194061399 in words is "twenty billion, one hundred ninety-four million, sixty-one thousand, three hundred ninety-nine".