1808043120 has 400 divisors, whose sum is σ = 6856227840. Its totient is φ = 441552384.

The previous prime is 1808043119. The next prime is 1808043131. The reversal of 1808043120 is 213408081.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 14236497 + ... + 14236623.

Almost surely, 2^1808043120 is an apocalyptic number.

1808043120 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 1808043120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3428113920).

1808043120 is an abundant number, since it is smaller than the sum of its proper divisors (5048184720).

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

1808043120 is a wasteful number, since it uses less digits than its factorization.

1808043120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 1808043120 is about 42521.0902964635. The cubic root of 1808043120 is about 1218.2495545342.

The spelling of 1808043120 in words is "one billion, eight hundred eight million, forty-three thousand, one hundred twenty".