8190090091 has 8 divisors (see below), whose sum is σ = 8226586368. Its totient is φ = 8153625000.

The previous prime is 8190090089. The next prime is 8190090109. The reversal of 8190090091 is 1900900918.

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 8190090091 - 2¹ = 8190090089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8190090091.

It is not an unprimeable number, because it can be changed into a prime (8190090061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 633906 + ... + 646696.

It is an arithmetic number, because the mean of its divisors is an integer number (1028323296).

Almost surely, 2^8190090091 is an apocalyptic number.

8190090091 is a deficient number, since it is larger than the sum of its proper divisors (36496277).

8190090091 is a wasteful number, since it uses less digits than its factorization.

8190090091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15593.

The product of its (nonzero) digits is 5832, while the sum is 37.

The square root of 8190090091 is about 90499.1165205495. The cubic root of 8190090091 is about 2015.7170052495.

It can be divided in two parts, 81900 and 90091, that added together give a triangular number (171991 = T₅₈₆).

The spelling of 8190090091 in words is "eight billion, one hundred ninety million, ninety thousand, ninety-one".