18583984811 has 16 divisors (see below), whose sum is σ = 22136844288. Its totient is φ = 15265605600.

The previous prime is 18583984789. The next prime is 18583984813. The reversal of 18583984811 is 11848938581.

It is not a de Polignac number, because 18583984811 - 2²⁶ = 18516875947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18583984813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 393380 + ... + 438081.

It is an arithmetic number, because the mean of its divisors is an integer number (1383552768).

Almost surely, 2^18583984811 is an apocalyptic number.

18583984811 is a deficient number, since it is larger than the sum of its proper divisors (3552859477).

18583984811 is a wasteful number, since it uses less digits than its factorization.

18583984811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831602.

The product of its digits is 2211840, while the sum is 56.

The spelling of 18583984811 in words is "eighteen billion, five hundred eighty-three million, nine hundred eighty-four thousand, eight hundred eleven".