18201119040 has 448 divisors, whose sum is σ = 69732875520. Its totient is φ = 4442480640.

The previous prime is 18201119017. The next prime is 18201119051. The reversal of 18201119040 is 4091110281.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 18201118995 and 18201119013.

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, 14713302 + ... + 14714538.

It is an arithmetic number, because the mean of its divisors is an integer number (155653740).

Almost surely, 2^18201119040 is an apocalyptic number.

18201119040 is a gapful number since it is divisible by the number (10) 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 18201119040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34866437760).

18201119040 is an abundant number, since it is smaller than the sum of its proper divisors (51531756480).

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

18201119040 is a wasteful number, since it uses less digits than its factorization.

18201119040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407 (or 1391 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The spelling of 18201119040 in words is "eighteen billion, two hundred one million, one hundred nineteen thousand, forty".