18349214850 has 288 divisors, whose sum is σ = 55717683840. Its totient is φ = 4431335040.

The previous prime is 18349214839. The next prime is 18349214909. The reversal of 18349214850 is 5841294381.

18349214850 is a `hidden beast` number, since 1 + 83 + 4 + 92 + 1 + 485 + 0 = 666.

It is a super-2 number, since 2×18349214850² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 18349214796 and 18349214805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 11208232 + ... + 11209868.

It is an arithmetic number, because the mean of its divisors is an integer number (193464180).

Almost surely, 2^18349214850 is an apocalyptic number.

18349214850 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 18349214850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27858841920).

18349214850 is an abundant number, since it is smaller than the sum of its proper divisors (37368468990).

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

18349214850 is a wasteful number, since it uses less digits than its factorization.

18349214850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1719 (or 1689 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 18349214850 in words is "eighteen billion, three hundred forty-nine million, two hundred fourteen thousand, eight hundred fifty".