1808486680 has 384 divisors, whose sum is σ = 5765437440. Its totient is φ = 492825600.

The previous prime is 1808486657. The next prime is 1808486681. The reversal of 1808486680 is 866848081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1808486681) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 38478417 + ... + 38478463.

It is an arithmetic number, because the mean of its divisors is an integer number (15014160).

Almost surely, 2^1808486680 is an apocalyptic number.

1808486680 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 1808486680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2882718720).

1808486680 is an abundant number, since it is smaller than the sum of its proper divisors (3956950760).

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

1808486680 is a wasteful number, since it uses less digits than its factorization.

1808486680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 49.

The square root of 1808486680 is about 42526.3057412703. The cubic root of 1808486680 is about 1218.3491691551.

The spelling of 1808486680 in words is "one billion, eight hundred eight million, four hundred eighty-six thousand, six hundred eighty".