1091318041 has 4 divisors (see below), whose sum is σ = 1190528784. Its totient is φ = 992107300.

The previous prime is 1091318021. The next prime is 1091318047. The reversal of 1091318041 is 1408131901.

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 not a de Polignac number, because 1091318041 - 2⁹ = 1091317529 is a prime.

It is a super-2 number, since 2×1091318041² = 2381950133224155362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1091318047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49605355 + ... + 49605376.

It is an arithmetic number, because the mean of its divisors is an integer number (297632196).

Almost surely, 2^1091318041 is an apocalyptic number.

1091318041 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1091318041 is a deficient number, since it is larger than the sum of its proper divisors (99210743).

1091318041 is an equidigital number, since it uses as much as digits as its factorization.

1091318041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99210742.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 1091318041 is about 33035.1031631506. The cubic root of 1091318041 is about 1029.5571165981.

Adding to 1091318041 its reverse (1408131901), we get a palindrome (2499449942).

The spelling of 1091318041 in words is "one billion, ninety-one million, three hundred eighteen thousand, forty-one".