18783233853 has 16 divisors (see below), whose sum is σ = 27234198720. Its totient is φ = 11467028736.

The previous prime is 18783233849. The next prime is 18783233857. The reversal of 18783233853 is 35833238781.

It is an interprime number because it is at equal distance from previous prime (18783233849) and next prime (18783233857).

It is not a de Polignac number, because 18783233853 - 2² = 18783233849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 18783233796 and 18783233805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18783233857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4975123 + ... + 4978896.

It is an arithmetic number, because the mean of its divisors is an integer number (1702137420).

Almost surely, 2^18783233853 is an apocalyptic number.

It is an amenable number.

18783233853 is a deficient number, since it is larger than the sum of its proper divisors (8450964867).

18783233853 is a wasteful number, since it uses less digits than its factorization.

18783233853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9954076.

The product of its digits is 2903040, while the sum is 51.

The spelling of 18783233853 in words is "eighteen billion, seven hundred eighty-three million, two hundred thirty-three thousand, eight hundred fifty-three".