18191828191000 has 32 divisors (see below), whose sum is σ = 42568877969280. Its totient is φ = 7276731276000.

The previous prime is 18191828190983. The next prime is 18191828191037. The reversal of 18191828191000 is 19182819181.

It is a super-2 number, since 2×18191828191000² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9095913096 + ... + 9095915095.

It is an arithmetic number, because the mean of its divisors is an integer number (1330277436540).

Almost surely, 2^{18191828191000} is an apocalyptic number.

18191828191000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18191828191000 is an abundant number, since it is smaller than the sum of its proper divisors (24377049778280).

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

18191828191000 is a wasteful number, since it uses less digits than its factorization.

18191828191000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18191828212 (or 18191828198 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 49.

The spelling of 18191828191000 in words is "eighteen trillion, one hundred ninety-one billion, eight hundred twenty-eight million, one hundred ninety-one thousand".