18500318350 has 24 divisors (see below), whose sum is σ = 34414513848. Its totient is φ = 7399284000.

The previous prime is 18500318339. The next prime is 18500318359. The reversal of 18500318350 is 5381300581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18500318359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 607692 + ... + 637408.

It is an arithmetic number, because the mean of its divisors is an integer number (1433938077).

Almost surely, 2^18500318350 is an apocalyptic number.

18500318350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18500318350 is a deficient number, since it is larger than the sum of its proper divisors (15914195498).

18500318350 is a wasteful number, since it uses less digits than its factorization.

18500318350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42180 (or 42175 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The spelling of 18500318350 in words is "eighteen billion, five hundred million, three hundred eighteen thousand, three hundred fifty".