1091983213 has 8 divisors (see below), whose sum is σ = 1139822208. Its totient is φ = 1044174384.

The previous prime is 1091983169. The next prime is 1091983229. The reversal of 1091983213 is 3123891901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1091983213 - 2⁹ = 1091982701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091983813) 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, 98056 + ... + 108622.

It is an arithmetic number, because the mean of its divisors is an integer number (142477776).

Almost surely, 2^1091983213 is an apocalyptic number.

It is an amenable number.

1091983213 is a deficient number, since it is larger than the sum of its proper divisors (47838995).

1091983213 is a wasteful number, since it uses less digits than its factorization.

1091983213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15083.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 1091983213 is about 33045.1692838757. The cubic root of 1091983213 is about 1029.7662500953.

The spelling of 1091983213 in words is "one billion, ninety-one million, nine hundred eighty-three thousand, two hundred thirteen".