18101818356 has 24 divisors (see below), whose sum is σ = 42258207264. Its totient is φ = 6030992160.

The previous prime is 18101818349. The next prime is 18101818367. The reversal of 18101818356 is 65381810181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342750 + ... + 392021.

It is an arithmetic number, because the mean of its divisors is an integer number (1760758636).

Almost surely, 2^18101818356 is an apocalyptic number.

It is an amenable number.

18101818356 is an abundant number, since it is smaller than the sum of its proper divisors (24156388908).

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

18101818356 is a wasteful number, since it uses less digits than its factorization.

18101818356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736831 (or 736829 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 42.

The spelling of 18101818356 in words is "eighteen billion, one hundred one million, eight hundred eighteen thousand, three hundred fifty-six".