1000091919191 has 16 divisors (see below), whose sum is σ = 1059848478720. Its totient is φ = 940438849920.

The previous prime is 1000091919179. The next prime is 1000091919193. The reversal of 1000091919191 is 1919191900001.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1000091919191 - 2²⁶ = 1000024810327 is a prime.

It is a super-2 number, since 2×1000091919191² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000091919193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143050706 + ... + 143057696.

It is an arithmetic number, because the mean of its divisors is an integer number (66240529920).

Almost surely, 2^{1000091919191} is an apocalyptic number.

1000091919191 is a deficient number, since it is larger than the sum of its proper divisors (59756559529).

1000091919191 is a wasteful number, since it uses less digits than its factorization.

1000091919191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13174.

The product of its (nonzero) digits is 6561, while the sum is 41.

The spelling of 1000091919191 in words is "one trillion, ninety-one million, nine hundred nineteen thousand, one hundred ninety-one".