191192101 has 2 divisors, whose sum is σ = 191192102. Its totient is φ = 191192100.

The previous prime is 191192093. The next prime is 191192129. The reversal of 191192101 is 101291191.

191192101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 183629601 + 7562500 = 13551^2 + 2750^2 .

It is a cyclic number.

It is not a de Polignac number, because 191192101 - 2³ = 191192093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191192191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95596050 + 95596051.

It is an arithmetic number, because the mean of its divisors is an integer number (95596051).

Almost surely, 2^191192101 is an apocalyptic number.

It is an amenable number.

191192101 is a deficient number, since it is larger than the sum of its proper divisors (1).

191192101 is an equidigital number, since it uses as much as digits as its factorization.

191192101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 25.

The square root of 191192101 is about 13827.2231847179. The cubic root of 191192101 is about 576.0895294300.

The spelling of 191192101 in words is "one hundred ninety-one million, one hundred ninety-two thousand, one hundred one".