18340350912 has 224 divisors, whose sum is σ = 59483914560. Its totient is φ = 5505269760.

The previous prime is 18340350901. The next prime is 18340350923. The reversal of 18340350912 is 21905304381.

18340350912 is a `hidden beast` number, since 183 + 40 + 350 + 91 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (18340350901) and next prime (18340350923).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 911068 + ... + 930980.

It is an arithmetic number, because the mean of its divisors is an integer number (265553190).

Almost surely, 2^18340350912 is an apocalyptic number.

18340350912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18340350912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29741957280).

18340350912 is an abundant number, since it is smaller than the sum of its proper divisors (41143563648).

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

18340350912 is a wasteful number, since it uses less digits than its factorization.

18340350912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19988 (or 19972 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 18340350912 in words is "eighteen billion, three hundred forty million, three hundred fifty thousand, nine hundred twelve".