18249006311 has 4 divisors (see below), whose sum is σ = 19042441392. Its totient is φ = 17455571232.

The previous prime is 18249006289. The next prime is 18249006353. The reversal of 18249006311 is 11360094281.

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 18249006311 - 2²² = 18244812007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18249006011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396717506 + ... + 396717551.

It is an arithmetic number, because the mean of its divisors is an integer number (4760610348).

Almost surely, 2^18249006311 is an apocalyptic number.

18249006311 is a deficient number, since it is larger than the sum of its proper divisors (793435081).

18249006311 is an equidigital number, since it uses as much as digits as its factorization.

18249006311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793435080.

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 18249006311 in words is "eighteen billion, two hundred forty-nine million, six thousand, three hundred eleven".