18302476811 has 4 divisors (see below), whose sum is σ = 19379093112. Its totient is φ = 17225860512.

The previous prime is 18302476771. The next prime is 18302476817. The reversal of 18302476811 is 11867420381.

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 18302476811 - 2¹⁰ = 18302475787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18302476817) 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, 538308125 + ... + 538308158.

It is an arithmetic number, because the mean of its divisors is an integer number (4844773278).

Almost surely, 2^18302476811 is an apocalyptic number.

18302476811 is a deficient number, since it is larger than the sum of its proper divisors (1076616301).

18302476811 is a wasteful number, since it uses less digits than its factorization.

18302476811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076616300.

The product of its (nonzero) digits is 64512, while the sum is 41.

The spelling of 18302476811 in words is "eighteen billion, three hundred two million, four hundred seventy-six thousand, eight hundred eleven".