18091104192 has 448 divisors, whose sum is σ = 62764416000. Its totient is φ = 5107415040.

The previous prime is 18091104131. The next prime is 18091104221. The reversal of 18091104192 is 29140119081.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 77644108 + ... + 77644340.

Almost surely, 2^18091104192 is an apocalyptic number.

18091104192 is a gapful number since it is divisible by the number (12) 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 18091104192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31382208000).

18091104192 is an abundant number, since it is smaller than the sum of its proper divisors (44673311808).

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

18091104192 is a wasteful number, since it uses less digits than its factorization.

18091104192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The spelling of 18091104192 in words is "eighteen billion, ninety-one million, one hundred four thousand, one hundred ninety-two".