190000911197 has 2 divisors, whose sum is σ = 190000911198. Its totient is φ = 190000911196.

The previous prime is 190000911187. The next prime is 190000911227. The reversal of 190000911197 is 791119000091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141877275556 + 48123635641 = 376666^2 + 219371^2 .

It is a cyclic number.

It is not a de Polignac number, because 190000911197 - 2¹⁰ = 190000910173 is a prime.

It is a super-2 number, since 2×190000911197² (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 190000911197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190000911187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95000455598 + 95000455599.

It is an arithmetic number, because the mean of its divisors is an integer number (95000455599).

Almost surely, 2^190000911197 is an apocalyptic number.

It is an amenable number.

190000911197 is a deficient number, since it is larger than the sum of its proper divisors (1).

190000911197 is an equidigital number, since it uses as much as digits as its factorization.

190000911197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5103, while the sum is 38.

The spelling of 190000911197 in words is "one hundred ninety billion, nine hundred eleven thousand, one hundred ninety-seven".