18693333485 has 4 divisors (see below), whose sum is σ = 22432000188. Its totient is φ = 14954666784.

The previous prime is 18693333479. The next prime is 18693333517. The reversal of 18693333485 is 58433339681.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2773707556 + 15919625929 = 52666^2 + 126173^2 .

It is a cyclic number.

It is not a de Polignac number, because 18693333485 - 2¹⁰ = 18693332461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1869333344 + ... + 1869333353.

It is an arithmetic number, because the mean of its divisors is an integer number (5608000047).

Almost surely, 2^18693333485 is an apocalyptic number.

It is an amenable number.

18693333485 is a deficient number, since it is larger than the sum of its proper divisors (3738666703).

18693333485 is an equidigital number, since it uses as much as digits as its factorization.

18693333485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3738666702.

The product of its digits is 5598720, while the sum is 53.

The spelling of 18693333485 in words is "eighteen billion, six hundred ninety-three million, three hundred thirty-three thousand, four hundred eighty-five".