18838533983 has 16 divisors (see below), whose sum is σ = 19322724960. Its totient is φ = 18360815616.

The previous prime is 18838533977. The next prime is 18838534051. The reversal of 18838533983 is 38933583881.

It is a cyclic number.

It is not a de Polignac number, because 18838533983 - 2¹⁰ = 18838532959 is a prime.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18838533943) 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, 6841535 + ... + 6844287.

It is an arithmetic number, because the mean of its divisors is an integer number (1207670310).

Almost surely, 2^18838533983 is an apocalyptic number.

18838533983 is a deficient number, since it is larger than the sum of its proper divisors (484190977).

18838533983 is a wasteful number, since it uses less digits than its factorization.

18838533983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3866.

The product of its digits is 14929920, while the sum is 59.

The spelling of 18838533983 in words is "eighteen billion, eight hundred thirty-eight million, five hundred thirty-three thousand, nine hundred eighty-three".