91269843819 has 16 divisors (see below), whose sum is σ = 151721299200. Its totient is φ = 47412905760.

The previous prime is 91269843761. The next prime is 91269843823. The reversal of 91269843819 is 91834896219.

It is not a de Polignac number, because 91269843819 - 2¹¹ = 91269841771 is a prime.

It is a super-2 number, since 2×91269843819² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91269843319) 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 15 ways as a sum of consecutive naturals, for example, 197553544 + ... + 197554005.

It is an arithmetic number, because the mean of its divisors is an integer number (9482581200).

Almost surely, 2^91269843819 is an apocalyptic number.

91269843819 is a deficient number, since it is larger than the sum of its proper divisors (60451455381).

91269843819 is a wasteful number, since it uses less digits than its factorization.

91269843819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395107570.

The product of its digits is 6718464, while the sum is 60.

The spelling of 91269843819 in words is "ninety-one billion, two hundred sixty-nine million, eight hundred forty-three thousand, eight hundred nineteen".