190911101 has 2 divisors, whose sum is σ = 190911102. Its totient is φ = 190911100.

The previous prime is 190911059. The next prime is 190911131. The reversal of 190911101 is 101119091.

It is a happy number.

190911101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172291876 + 18619225 = 13126^2 + 4315^2 .

It is an emirp because it is prime and its reverse (101119091) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190911101 is a prime.

It is a Chen prime.

It is equal to p_10603157 and since 190911101 and 10603157 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190911131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95455550 + 95455551.

It is an arithmetic number, because the mean of its divisors is an integer number (95455551).

Almost surely, 2^190911101 is an apocalyptic number.

It is an amenable number.

190911101 is a deficient number, since it is larger than the sum of its proper divisors (1).

190911101 is an equidigital number, since it uses as much as digits as its factorization.

190911101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81, while the sum is 23.

The square root of 190911101 is about 13817.0583338133. The cubic root of 190911101 is about 575.8071597980.

The spelling of 190911101 in words is "one hundred ninety million, nine hundred eleven thousand, one hundred one".