1091896093 has 4 divisors (see below), whose sum is σ = 1097071168. Its totient is φ = 1086721020.

The previous prime is 1091896073. The next prime is 1091896097. The reversal of 1091896093 is 3906981901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1091896093 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 (1091896097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2587221 + ... + 2587642.

It is an arithmetic number, because the mean of its divisors is an integer number (274267792).

Almost surely, 2^1091896093 is an apocalyptic number.

It is an amenable number.

1091896093 is a deficient number, since it is larger than the sum of its proper divisors (5175075).

1091896093 is an equidigital number, since it uses as much as digits as its factorization.

1091896093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5175074.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 1091896093 is about 33043.8510618844. The cubic root of 1091896093 is about 1029.7388639534.

The spelling of 1091896093 in words is "one billion, ninety-one million, eight hundred ninety-six thousand, ninety-three".