18783283287 has 4 divisors (see below), whose sum is σ = 25044377720. Its totient is φ = 12522188856.

The previous prime is 18783283261. The next prime is 18783283307. The reversal of 18783283287 is 78238238781.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78238238781 = 3 ⋅26079412927.

It is not a de Polignac number, because 18783283287 - 2¹² = 18783279191 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 (18783283487) 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 3 ways as a sum of consecutive naturals, for example, 3130547212 + ... + 3130547217.

It is an arithmetic number, because the mean of its divisors is an integer number (6261094430).

Almost surely, 2^18783283287 is an apocalyptic number.

18783283287 is a deficient number, since it is larger than the sum of its proper divisors (6261094433).

18783283287 is an equidigital number, since it uses as much as digits as its factorization.

18783283287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6261094432.

The product of its digits is 7225344, while the sum is 57.

The spelling of 18783283287 in words is "eighteen billion, seven hundred eighty-three million, two hundred eighty-three thousand, two hundred eighty-seven".