1101094991 has 4 divisors (see below), whose sum is σ = 1124522592. Its totient is φ = 1077667392.

The previous prime is 1101094987. The next prime is 1101095041. The reversal of 1101094991 is 1994901011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1101094991 - 2² = 1101094987 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 (1101094901) 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, 11713730 + ... + 11713823.

It is an arithmetic number, because the mean of its divisors is an integer number (281130648).

Almost surely, 2^1101094991 is an apocalyptic number.

1101094991 is a deficient number, since it is larger than the sum of its proper divisors (23427601).

1101094991 is an equidigital number, since it uses as much as digits as its factorization.

1101094991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23427600.

The product of its (nonzero) digits is 2916, while the sum is 35.

The square root of 1101094991 is about 33182.7514079228. The cubic root of 1101094991 is about 1032.6225283593.

The spelling of 1101094991 in words is "one billion, one hundred one million, ninety-four thousand, nine hundred ninety-one".