18133812350 has 12 divisors (see below), whose sum is σ = 33728891064. Its totient is φ = 7253524920.

The previous prime is 18133812349. The next prime is 18133812371. The reversal of 18133812350 is 5321833181.

It is a self number, because there is not a number n which added to its sum of digits gives 18133812350.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 181338074 + ... + 181338173.

It is an arithmetic number, because the mean of its divisors is an integer number (2810740922).

Almost surely, 2^18133812350 is an apocalyptic number.

18133812350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18133812350 is a deficient number, since it is larger than the sum of its proper divisors (15595078714).

18133812350 is a wasteful number, since it uses less digits than its factorization.

18133812350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362676259 (or 362676254 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The spelling of 18133812350 in words is "eighteen billion, one hundred thirty-three million, eight hundred twelve thousand, three hundred fifty".