18348063091 has 4 divisors (see below), whose sum is σ = 18529727184. Its totient is φ = 18166399000.

The previous prime is 18348063061. The next prime is 18348063101. The reversal of 18348063091 is 19036084381.

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 18348063091 - 2³¹ = 16200579443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18348063011) 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, 90831895 + ... + 90832096.

It is an arithmetic number, because the mean of its divisors is an integer number (4632431796).

Almost surely, 2^18348063091 is an apocalyptic number.

18348063091 is a deficient number, since it is larger than the sum of its proper divisors (181664093).

18348063091 is a wasteful number, since it uses less digits than its factorization.

18348063091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181664092.

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 18348063091 in words is "eighteen billion, three hundred forty-eight million, sixty-three thousand, ninety-one".