18468650412 has 36 divisors (see below), whose sum is σ = 46982012896. Its totient is φ = 6117003360.

The previous prime is 18468650399. The next prime is 18468650413. The reversal of 18468650412 is 21405686481.

It is a happy number.

18468650412 is a `hidden beast` number, since 1 + 84 + 68 + 6 + 504 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (18468650413) 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, 1628164 + ... + 1639467.

Almost surely, 2^18468650412 is an apocalyptic number.

18468650412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18468650412 is an abundant number, since it is smaller than the sum of its proper divisors (28513362484).

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

18468650412 is a wasteful number, since it uses less digits than its factorization.

18468650412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3267798 (or 3267793 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 18468650412 in words is "eighteen billion, four hundred sixty-eight million, six hundred fifty thousand, four hundred twelve".