9091220019 has 16 divisors (see below), whose sum is σ = 13857946368. Its totient is φ = 5193235872.

The previous prime is 9091219967. The next prime is 9091220041. The reversal of 9091220019 is 9100221909.

It is not a de Polignac number, because 9091220019 - 2⁹ = 9091219507 is a prime.

It is a super-2 number, since 2×9091220019² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9091220219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7497 + ... + 135050.

It is an arithmetic number, because the mean of its divisors is an integer number (866121648).

Almost surely, 2^9091220019 is an apocalyptic number.

9091220019 is a deficient number, since it is larger than the sum of its proper divisors (4766726349).

9091220019 is a wasteful number, since it uses less digits than its factorization.

9091220019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145594.

The product of its (nonzero) digits is 2916, while the sum is 33.

The square root of 9091220019 is about 95347.8894312821. The cubic root of 9091220019 is about 2087.0878161358.

The spelling of 9091220019 in words is "nine billion, ninety-one million, two hundred twenty thousand, nineteen".