191132154069 has 4 divisors (see below), whose sum is σ = 254842872096. Its totient is φ = 127421436044.

The previous prime is 191132153981. The next prime is 191132154089. The reversal of 191132154069 is 960451231191.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 960451231191 = 3 ⋅320150410397.

It is a cyclic number.

It is not a de Polignac number, because 191132154069 - 2¹⁷ = 191132022997 is a prime.

It is a super-2 number, since 2×191132154069² (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 191132154069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191132154089) 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 in 3 ways as a sum of consecutive naturals, for example, 31855359009 + ... + 31855359014.

It is an arithmetic number, because the mean of its divisors is an integer number (63710718024).

Almost surely, 2^191132154069 is an apocalyptic number.

It is an amenable number.

191132154069 is a deficient number, since it is larger than the sum of its proper divisors (63710718027).

191132154069 is an equidigital number, since it uses as much as digits as its factorization.

191132154069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63710718026.

The product of its (nonzero) digits is 58320, while the sum is 42.

The spelling of 191132154069 in words is "one hundred ninety-one billion, one hundred thirty-two million, one hundred fifty-four thousand, sixty-nine".