109274818191 has 48 divisors (see below), whose sum is σ = 189339225600. Its totient is φ = 54808649280.

The previous prime is 109274818187. The next prime is 109274818259. The reversal of 109274818191 is 191818472901.

It is not a de Polignac number, because 109274818191 - 2² = 109274818187 is a prime.

It is a super-2 number, since 2×109274818191² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109274858191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 667771 + ... + 815148.

It is an arithmetic number, because the mean of its divisors is an integer number (3944567200).

Almost surely, 2^109274818191 is an apocalyptic number.

109274818191 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

109274818191 is a deficient number, since it is larger than the sum of its proper divisors (80064407409).

109274818191 is a wasteful number, since it uses less digits than its factorization.

109274818191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482980 (or 1482969 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 51.

The spelling of 109274818191 in words is "one hundred nine billion, two hundred seventy-four million, eight hundred eighteen thousand, one hundred ninety-one".