191132154089 has 2 divisors, whose sum is σ = 191132154090. Its totient is φ = 191132154088.

The previous prime is 191132153981. The next prime is 191132154133. The reversal of 191132154089 is 980451231191.

It is an a-pointer prime, because the next prime (191132154133) can be obtained adding 191132154089 to its sum of digits (44).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190916563600 + 215590489 = 436940^2 + 14683^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-191132154089 is a prime.

It is not a weakly prime, because it can be changed into another prime (191132153089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95566077044 + 95566077045.

It is an arithmetic number, because the mean of its divisors is an integer number (95566077045).

Almost surely, 2^191132154089 is an apocalyptic number.

It is an amenable number.

191132154089 is a deficient number, since it is larger than the sum of its proper divisors (1).

191132154089 is an equidigital number, since it uses as much as digits as its factorization.

191132154089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 44.

The spelling of 191132154089 in words is "one hundred ninety-one billion, one hundred thirty-two million, one hundred fifty-four thousand, eighty-nine".