2099361091 has 4 divisors (see below), whose sum is σ = 2209853800. Its totient is φ = 1988868384.

The previous prime is 2099361031. The next prime is 2099361101. The reversal of 2099361091 is 1901639902.

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

It is a cyclic number.

It is not a de Polignac number, because 2099361091 - 2¹¹ = 2099359043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2099361031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55246326 + ... + 55246363.

It is an arithmetic number, because the mean of its divisors is an integer number (552463450).

Almost surely, 2^2099361091 is an apocalyptic number.

2099361091 is a deficient number, since it is larger than the sum of its proper divisors (110492709).

2099361091 is a wasteful number, since it uses less digits than its factorization.

2099361091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110492708.

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 2099361091 is about 45818.7853505525. The cubic root of 2099361091 is about 1280.4492829967.

The spelling of 2099361091 in words is "two billion, ninety-nine million, three hundred sixty-one thousand, ninety-one".