9091109102 has 4 divisors (see below), whose sum is σ = 13636663656. Its totient is φ = 4545554550.

The previous prime is 9091109059. The next prime is 9091109107. The reversal of 9091109102 is 2019011909.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9091109107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2272777274 + ... + 2272777277.

It is an arithmetic number, because the mean of its divisors is an integer number (3409165914).

Almost surely, 2^9091109102 is an apocalyptic number.

9091109102 is a deficient number, since it is larger than the sum of its proper divisors (4545554554).

9091109102 is a wasteful number, since it uses less digits than its factorization.

9091109102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4545554553.

The product of its (nonzero) digits is 1458, while the sum is 32.

The square root of 9091109102 is about 95347.3077857996. The cubic root of 9091109102 is about 2087.0793282959.

The spelling of 9091109102 in words is "nine billion, ninety-one million, one hundred nine thousand, one hundred two".