1801333140 has 48 divisors (see below), whose sum is σ = 5046578880. Its totient is φ = 480084480.

The previous prime is 1801333099. The next prime is 1801333187. The reversal of 1801333140 is 413331081.

It is a self number, because there is not a number n which added to its sum of digits gives 1801333140.

It is a congruent number.

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, 113196 + ... + 128124.

It is an arithmetic number, because the mean of its divisors is an integer number (105137060).

Almost surely, 2^1801333140 is an apocalyptic number.

1801333140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1801333140 is an abundant number, since it is smaller than the sum of its proper divisors (3245245740).

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

1801333140 is a wasteful number, since it uses less digits than its factorization.

1801333140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16952 (or 16950 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1801333140 is about 42442.1151687802. The cubic root of 1801333140 is about 1216.7406371073.

The spelling of 1801333140 in words is "one billion, eight hundred one million, three hundred thirty-three thousand, one hundred forty".