194244989011 has 2 divisors, whose sum is σ = 194244989012. Its totient is φ = 194244989010.

The previous prime is 194244988909. The next prime is 194244989041. The reversal of 194244989011 is 110989442491.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 194244989011 - 2¹¹ = 194244986963 is a prime.

It is a super-2 number, since 2×194244989011² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 194244989011.

It is not a weakly prime, because it can be changed into another prime (194244989041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97122494505 + 97122494506.

It is an arithmetic number, because the mean of its divisors is an integer number (97122494506).

Almost surely, 2^194244989011 is an apocalyptic number.

194244989011 is a deficient number, since it is larger than the sum of its proper divisors (1).

194244989011 is an equidigital number, since it uses as much as digits as its factorization.

194244989011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 746496, while the sum is 52.

The spelling of 194244989011 in words is "one hundred ninety-four billion, two hundred forty-four million, nine hundred eighty-nine thousand, eleven".