1801441240 has 16 divisors (see below), whose sum is σ = 4053242880. Its totient is φ = 720576480.

The previous prime is 1801441219. The next prime is 1801441241. The reversal of 1801441240 is 421441081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1801441241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22517976 + ... + 22518055.

It is an arithmetic number, because the mean of its divisors is an integer number (253327680).

Almost surely, 2^1801441240 is an apocalyptic number.

1801441240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1801441240 is an abundant number, since it is smaller than the sum of its proper divisors (2251801640).

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

1801441240 is a wasteful number, since it uses less digits than its factorization.

1801441240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45036042 (or 45036038 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 1801441240 is about 42443.3886488815. The cubic root of 1801441240 is about 1216.7649759389.

The spelling of 1801441240 in words is "one billion, eight hundred one million, four hundred forty-one thousand, two hundred forty".