18283918583 has 4 divisors (see below), whose sum is σ = 20895906960. Its totient is φ = 15671930208.

The previous prime is 18283918577. The next prime is 18283918613. The reversal of 18283918583 is 38581938281.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38581938281 = 7219 ⋅5344499.

It is a cyclic number.

It is not a de Polignac number, because 18283918583 - 2⁴ = 18283918567 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 (18283918283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1305994178 + ... + 1305994191.

It is an arithmetic number, because the mean of its divisors is an integer number (5223976740).

Almost surely, 2^18283918583 is an apocalyptic number.

18283918583 is a deficient number, since it is larger than the sum of its proper divisors (2611988377).

18283918583 is an equidigital number, since it uses as much as digits as its factorization.

18283918583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2611988376.

The product of its digits is 3317760, while the sum is 56.

The spelling of 18283918583 in words is "eighteen billion, two hundred eighty-three million, nine hundred eighteen thousand, five hundred eighty-three".