1090910091 has 8 divisors (see below), whose sum is σ = 1485494784. Its totient is φ = 711799400.

The previous prime is 1090910089. The next prime is 1090910123. The reversal of 1090910091 is 1900190901.

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 1090910091 - 2¹ = 1090910089 is a prime.

It is a super-3 number, since 3×1090910091³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1090918091) 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, 3868335 + ... + 3868616.

It is an arithmetic number, because the mean of its divisors is an integer number (185686848).

Almost surely, 2^1090910091 is an apocalyptic number.

1090910091 is a deficient number, since it is larger than the sum of its proper divisors (394584693).

1090910091 is an equidigital number, since it uses as much as digits as its factorization.

1090910091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7737001.

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

The square root of 1090910091 is about 33028.9280934153. The cubic root of 1090910091 is about 1029.4288129763.

The spelling of 1090910091 in words is "one billion, ninety million, nine hundred ten thousand, ninety-one".