1001800481 has 4 divisors (see below), whose sum is σ = 1092873264. Its totient is φ = 910727700.

The previous prime is 1001800477. The next prime is 1001800507. The reversal of 1001800481 is 1840081001.

1001800481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1001800481 - 2² = 1001800477 is a prime.

It is a super-2 number, since 2×1001800481² = 2007208407463662722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001800411) 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, 45536375 + ... + 45536396.

It is an arithmetic number, because the mean of its divisors is an integer number (273218316).

Almost surely, 2^1001800481 is an apocalyptic number.

1001800481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1001800481 is a deficient number, since it is larger than the sum of its proper divisors (91072783).

1001800481 is an equidigital number, since it uses as much as digits as its factorization.

1001800481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91072782.

The product of its (nonzero) digits is 256, while the sum is 23.

The square root of 1001800481 is about 31651.2319033557. The cubic root of 1001800481 is about 1000.5998005008.

Adding to 1001800481 its reverse (1840081001), we get a palindrome (2841881482).

The spelling of 1001800481 in words is "one billion, one million, eight hundred thousand, four hundred eighty-one".