1909109091092 has 24 divisors (see below), whose sum is σ = 3827036262336. Its totient is φ = 816300021888.

The previous prime is 1909109091053. The next prime is 1909109091119. The reversal of 1909109091092 is 2901909019091.

It is a self number, because there is not a number n which added to its sum of digits gives 1909109091092.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78720518 + ... + 78744765.

It is an arithmetic number, because the mean of its divisors is an integer number (159459844264).

Almost surely, 2^{1909109091092} is an apocalyptic number.

It is an amenable number.

1909109091092 is an abundant number, since it is smaller than the sum of its proper divisors (1917927171244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1909109091092 is a wasteful number, since it uses less digits than its factorization.

1909109091092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157465727 (or 157465725 counting only the distinct ones).

The product of its (nonzero) digits is 118098, while the sum is 50.

The spelling of 1909109091092 in words is "one trillion, nine hundred nine billion, one hundred nine million, ninety-one thousand, ninety-two".