18274887811 has 16 divisors (see below), whose sum is σ = 18874503648. Its totient is φ = 17683142400.

The previous prime is 18274887803. The next prime is 18274887833. The reversal of 18274887811 is 11878847281.

It is a cyclic number.

It is not a de Polignac number, because 18274887811 - 2³ = 18274887803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18274887881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2943036 + ... + 2949238.

It is an arithmetic number, because the mean of its divisors is an integer number (1179656478).

Almost surely, 2^18274887811 is an apocalyptic number.

18274887811 is a deficient number, since it is larger than the sum of its proper divisors (599615837).

18274887811 is a wasteful number, since it uses less digits than its factorization.

18274887811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6822.

The product of its digits is 1605632, while the sum is 55.

The spelling of 18274887811 in words is "eighteen billion, two hundred seventy-four million, eight hundred eighty-seven thousand, eight hundred eleven".