191495485441 has 4 divisors (see below), whose sum is σ = 206225907412. Its totient is φ = 176765063472.

The previous prime is 191495485439. The next prime is 191495485483. The reversal of 191495485441 is 144584594191.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60074010000 + 131421475441 = 245100^2 + 362521^2 .

It is a cyclic number.

It is not a de Polignac number, because 191495485441 - 2¹ = 191495485439 is a prime.

It is a super-4 number, since 4×191495485441⁴ (a number of 46 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (191495485241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7365210966 + ... + 7365210991.

It is an arithmetic number, because the mean of its divisors is an integer number (51556476853).

Almost surely, 2^191495485441 is an apocalyptic number.

It is an amenable number.

191495485441 is a deficient number, since it is larger than the sum of its proper divisors (14730421971).

191495485441 is a wasteful number, since it uses less digits than its factorization.

191495485441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14730421970.

The product of its digits is 4147200, while the sum is 55.

The spelling of 191495485441 in words is "one hundred ninety-one billion, four hundred ninety-five million, four hundred eighty-five thousand, four hundred forty-one".