18242196091 has 16 divisors (see below), whose sum is σ = 20895805440. Its totient is φ = 15600533760.

The previous prime is 18242196059. The next prime is 18242196097. The reversal of 18242196091 is 19069124281.

It is not a de Polignac number, because 18242196091 - 2⁵ = 18242196059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18242196097) 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, 9564960 + ... + 9566866.

It is an arithmetic number, because the mean of its divisors is an integer number (1305987840).

Almost surely, 2^18242196091 is an apocalyptic number.

18242196091 is a deficient number, since it is larger than the sum of its proper divisors (2653609349).

18242196091 is a wasteful number, since it uses less digits than its factorization.

18242196091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4314.

The product of its (nonzero) digits is 62208, while the sum is 43.

The spelling of 18242196091 in words is "eighteen billion, two hundred forty-two million, one hundred ninety-six thousand, ninety-one".