18284311356 has 12 divisors (see below), whose sum is σ = 42663393192. Its totient is φ = 6094770448.

The previous prime is 18284311343. The next prime is 18284311369. The reversal of 18284311356 is 65311348281.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18284311343) and next prime (18284311369).

It is a tau number, because it is divible by the number of its divisors (12).

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, 761846295 + ... + 761846318.

It is an arithmetic number, because the mean of its divisors is an integer number (3555282766).

Almost surely, 2^18284311356 is an apocalyptic number.

It is an amenable number.

18284311356 is an abundant number, since it is smaller than the sum of its proper divisors (24379081836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18284311356 is a wasteful number, since it uses less digits than its factorization.

18284311356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523692620 (or 1523692618 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The spelling of 18284311356 in words is "eighteen billion, two hundred eighty-four million, three hundred eleven thousand, three hundred fifty-six".