1801364720 has 40 divisors (see below), whose sum is σ = 4190208000. Its totient is φ = 720195840.

The previous prime is 1801364701. The next prime is 1801364737. The reversal of 1801364720 is 274631081.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215825 + ... + 224015.

It is an arithmetic number, because the mean of its divisors is an integer number (104755200).

Almost surely, 2^1801364720 is an apocalyptic number.

1801364720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1801364720 is an abundant number, since it is smaller than the sum of its proper divisors (2388843280).

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

1801364720 is a wasteful number, since it uses less digits than its factorization.

1801364720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10953 (or 10947 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 1801364720 is about 42442.4872032731. The cubic root of 1801364720 is about 1216.7477474791.

The spelling of 1801364720 in words is "one billion, eight hundred one million, three hundred sixty-four thousand, seven hundred twenty".