18334784836 has 27 divisors (see below), whose sum is σ = 32535128829. Its totient is φ = 9040787808.

The previous prime is 18334784807. The next prime is 18334784849. The reversal of 18334784836 is 63848743381.

The square root of 18334784836 is 135406.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 16991122500 + 1343662336 = 130350^2 + 36656^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 21393720 + ... + 21394576.

Almost surely, 2^18334784836 is an apocalyptic number.

18334784836 is the 135406-th square number.

It is an amenable number.

18334784836 is a deficient number, since it is larger than the sum of its proper divisors (14200343993).

18334784836 is an frugal number, since it uses more digits than its factorization.

18334784836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1876 (or 938 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 55.

The spelling of 18334784836 in words is "eighteen billion, three hundred thirty-four million, seven hundred eighty-four thousand, eight hundred thirty-six".