1091842368 has 56 divisors (see below), whose sum is σ = 2911644672. Its totient is φ = 361073664.

The previous prime is 1091842363. The next prime is 1091842397. The reversal of 1091842368 is 8632481901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091842363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1996 + ... + 46772.

Almost surely, 2^1091842368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1091842368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1455822336).

1091842368 is an abundant number, since it is smaller than the sum of its proper divisors (1819802304).

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

1091842368 is a wasteful number, since it uses less digits than its factorization.

1091842368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44919 (or 44909 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 1091842368 is about 33043.0381169771. The cubic root of 1091842368 is about 1029.7219747920.

The spelling of 1091842368 in words is "one billion, ninety-one million, eight hundred forty-two thousand, three hundred sixty-eight".