1009109091 has 8 divisors (see below), whose sum is σ = 1348477200. Its totient is φ = 671240192.

The previous prime is 1009109083. The next prime is 1009109141. The reversal of 1009109091 is 1909019001.

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 1009109091 - 2³ = 1009109083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1009109021) 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, 373230 + ... + 375923.

It is an arithmetic number, because the mean of its divisors is an integer number (168559650).

Almost surely, 2^1009109091 is an apocalyptic number.

1009109091 is a deficient number, since it is larger than the sum of its proper divisors (339368109).

1009109091 is an equidigital number, since it uses as much as digits as its factorization.

1009109091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749605.

The product of its (nonzero) digits is 729, while the sum is 30.

The square root of 1009109091 is about 31766.4774723292. The cubic root of 1009109091 is about 1003.0271905372.

The spelling of 1009109091 in words is "one billion, nine million, one hundred nine thousand, ninety-one".