1808118080 has 112 divisors (see below), whose sum is σ = 4406920320. Its totient is φ = 706406400.

The previous prime is 1808118077. The next prime is 1808118089. The reversal of 1808118080 is 808118081.

It is a self number, because there is not a number n which added to its sum of digits gives 1808118080.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1808118089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4118501 + ... + 4118939.

Almost surely, 2^1808118080 is an apocalyptic number.

1808118080 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 1808118080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2203460160).

1808118080 is an abundant number, since it is smaller than the sum of its proper divisors (2598802240).

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

1808118080 is a wasteful number, since it uses less digits than its factorization.

1808118080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728 (or 718 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 35.

The square root of 1808118080 is about 42521.9717322704. The cubic root of 1808118080 is about 1218.2663901808.

Subtracting from 1808118080 its reverse (808118081), we obtain a palindrome (999999999).

The spelling of 1808118080 in words is "one billion, eight hundred eight million, one hundred eighteen thousand, eighty".