1001000540 has 48 divisors (see below), whose sum is σ = 2244775680. Its totient is φ = 374115840.

The previous prime is 1001000531. The next prime is 1001000543. The reversal of 1001000540 is 450001001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001000543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9857 + ... + 45816.

It is an arithmetic number, because the mean of its divisors is an integer number (46766160).

Almost surely, 2^1001000540 is an apocalyptic number.

1001000540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001000540 is an abundant number, since it is smaller than the sum of its proper divisors (1243775140).

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

1001000540 is a wasteful number, since it uses less digits than its factorization.

1001000540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55742 (or 55740 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 1001000540 is about 31638.5925729954. The cubic root of 1001000540 is about 1000.3334021640. Note that the first 3 decimals are identical.

Adding to 1001000540 its reverse (450001001), we get a palindrome (1451001541).

The spelling of 1001000540 in words is "one billion, one million, five hundred forty", and thus it is an aban number.