1101000191 has 2 divisors, whose sum is σ = 1101000192. Its totient is φ = 1101000190.

The previous prime is 1101000151. The next prime is 1101000301. The reversal of 1101000191 is 1910001011.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1101000191 - 2³⁰ = 27258367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101000151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550500095 + 550500096.

It is an arithmetic number, because the mean of its divisors is an integer number (550500096).

Almost surely, 2^1101000191 is an apocalyptic number.

1101000191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101000191 is an equidigital number, since it uses as much as digits as its factorization.

1101000191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 14.

The square root of 1101000191 is about 33181.3229241994. The cubic root of 1101000191 is about 1032.5928925798.

The spelling of 1101000191 in words is "one billion, one hundred one million, one hundred ninety-one", and thus it is an aban number.