18703353852 has 18 divisors (see below), whose sum is σ = 47277922328. Its totient is φ = 6234451272.

The previous prime is 18703353797. The next prime is 18703353859. The reversal of 18703353852 is 25835330781.

18703353852 is a `hidden beast` number, since 1 + 87 + 0 + 33 + 538 + 5 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 18703353798 and 18703353807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18703353859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 259768768 + ... + 259768839.

Almost surely, 2^18703353852 is an apocalyptic number.

18703353852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18703353852 is an abundant number, since it is smaller than the sum of its proper divisors (28574568476).

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

18703353852 is a wasteful number, since it uses less digits than its factorization.

18703353852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519537617 (or 519537612 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 18703353852 in words is "eighteen billion, seven hundred three million, three hundred fifty-three thousand, eight hundred fifty-two".