18505914210 has 128 divisors (see below), whose sum is σ = 56947138560. Its totient is φ = 4188811968.

The previous prime is 18505914199. The next prime is 18505914211. The reversal of 18505914210 is 1241950581.

18505914210 is a `hidden beast` number, since 1 + 8 + 50 + 591 + 4 + 2 + 10 = 666.

It is not an unprimeable number, because it can be changed into a prime (18505914211) 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 63 ways as a sum of consecutive naturals, for example, 147139 + ... + 242201.

It is an arithmetic number, because the mean of its divisors is an integer number (444899520).

Almost surely, 2^18505914210 is an apocalyptic number.

18505914210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18505914210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28473569280).

18505914210 is an abundant number, since it is smaller than the sum of its proper divisors (38441224350).

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

18505914210 is a wasteful number, since it uses less digits than its factorization.

18505914210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95189 (or 95183 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

The spelling of 18505914210 in words is "eighteen billion, five hundred five million, nine hundred fourteen thousand, two hundred ten".