18194872858290 has 24 divisors (see below), whose sum is σ = 47306669431788. Its totient is φ = 4851966095520.

The previous prime is 18194872858259. The next prime is 18194872858297. The reversal of 18194872858290 is 9285827849181.

18194872858290 is a `hidden beast` number, since 1 + 8 + 1 + 9 + 487 + 2 + 8 + 58 + 2 + 90 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17448724145889 + 746148712401 = 4177167^2 + 863799^2 .

It is a super-3 number, since 3×18194872858290³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (18194872858297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101082626901 + ... + 101082627080.

Almost surely, 2^{18194872858290} is an apocalyptic number.

18194872858290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18194872858290 is an abundant number, since it is smaller than the sum of its proper divisors (29111796573498).

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

18194872858290 is a wasteful number, since it uses less digits than its factorization.

18194872858290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202165253994 (or 202165253991 counting only the distinct ones).

The product of its (nonzero) digits is 185794560, while the sum is 72.

The spelling of 18194872858290 in words is "eighteen trillion, one hundred ninety-four billion, eight hundred seventy-two million, eight hundred fifty-eight thousand, two hundred ninety".