1081191892092 has 48 divisors (see below), whose sum is σ = 2716925030400. Its totient is φ = 332664159168.

The previous prime is 1081191892091. The next prime is 1081191892153. The reversal of 1081191892092 is 2902981911801.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081191892091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6121573 + ... + 6295715.

It is an arithmetic number, because the mean of its divisors is an integer number (56602604800).

Almost surely, 2^{1081191892092} is an apocalyptic number.

1081191892092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1081191892092 is an abundant number, since it is smaller than the sum of its proper divisors (1635733138308).

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

1081191892092 is a wasteful number, since it uses less digits than its factorization.

1081191892092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213962 (or 213960 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 51.

It can be divided in two parts, 10811 and 91892092, that added together give a triangular number (91902903 = T₁₃₅₅₇).

The spelling of 1081191892092 in words is "one trillion, eighty-one billion, one hundred ninety-one million, eight hundred ninety-two thousand, ninety-two".