1808338480 has 80 divisors (see below), whose sum is σ = 4590018720. Its totient is φ = 658520064.

The previous prime is 1808338409. The next prime is 1808338507. The reversal of 1808338480 is 848338081.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64011 + ... + 87829.

It is an arithmetic number, because the mean of its divisors is an integer number (57375234).

Almost surely, 2^1808338480 is an apocalyptic number.

1808338480 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 1808338480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2295009360).

1808338480 is an abundant number, since it is smaller than the sum of its proper divisors (2781680240).

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

1808338480 is a wasteful number, since it uses less digits than its factorization.

1808338480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23918 (or 23912 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 43.

The square root of 1808338480 is about 42524.5632546649. The cubic root of 1808338480 is about 1218.3158882392.

The spelling of 1808338480 in words is "one billion, eight hundred eight million, three hundred thirty-eight thousand, four hundred eighty".