18699303168 has 864 divisors, whose sum is σ = 72029905920. Its totient is φ = 4737761280.

The previous prime is 18699303151. The next prime is 18699303191. The reversal of 18699303168 is 86130399681.

It is a tau number, because it is divible by the number of its divisors (864).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 136491196 + ... + 136491332.

Almost surely, 2^18699303168 is an apocalyptic number.

18699303168 is a gapful number since it is divisible by the number (18) 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 18699303168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36014952960).

18699303168 is an abundant number, since it is smaller than the sum of its proper divisors (53330602752).

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

18699303168 is a wasteful number, since it uses less digits than its factorization.

18699303168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The spelling of 18699303168 in words is "eighteen billion, six hundred ninety-nine million, three hundred three thousand, one hundred sixty-eight".