18670185201852 has 36 divisors (see below), whose sum is σ = 47251423295440. Its totient is φ = 6215833216512.

The previous prime is 18670185201841. The next prime is 18670185201853. The reversal of 18670185201852 is 25810258107681.

It is a happy number.

18670185201852 is a `hidden beast` number, since 1 + 8 + 67 + 0 + 1 + 8 + 520 + 1 + 8 + 52 = 666.

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

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18670185201853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 315047077 + ... + 315106332.

Almost surely, 2^{18670185201852} is an apocalyptic number.

18670185201852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18670185201852 is an abundant number, since it is smaller than the sum of its proper divisors (28581238093588).

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

18670185201852 is a wasteful number, since it uses less digits than its factorization.

18670185201852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630154242 (or 630154237 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 54.

The spelling of 18670185201852 in words is "eighteen trillion, six hundred seventy billion, one hundred eighty-five million, two hundred one thousand, eight hundred fifty-two".