1091913396 has 24 divisors (see below), whose sum is σ = 2911769280. Its totient is φ = 311975232.

The previous prime is 1091913391. The next prime is 1091913397. The reversal of 1091913396 is 6933191901.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091913391) 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, 6499401 + ... + 6499568.

It is an arithmetic number, because the mean of its divisors is an integer number (121323720).

Almost surely, 2^1091913396 is an apocalyptic number.

It is an amenable number.

1091913396 is an abundant number, since it is smaller than the sum of its proper divisors (1819855884).

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

1091913396 is a wasteful number, since it uses less digits than its factorization.

1091913396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12998983 (or 12998981 counting only the distinct ones).

The product of its (nonzero) digits is 39366, while the sum is 42.

The square root of 1091913396 is about 33044.1128796038. The cubic root of 1091913396 is about 1029.7443032614.

The spelling of 1091913396 in words is "one billion, ninety-one million, nine hundred thirteen thousand, three hundred ninety-six".