1002513440 has 24 divisors (see below), whose sum is σ = 2368438380. Its totient is φ = 401005312.

The previous prime is 1002513403. The next prime is 1002513541. The reversal of 1002513440 is 443152001.

It can be written as a sum of positive squares in 2 ways, for example, as 992754064 + 9759376 = 31508^2 + 3124^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3132695 + ... + 3133014.

Almost surely, 2^1002513440 is an apocalyptic number.

1002513440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002513440 is an abundant number, since it is smaller than the sum of its proper divisors (1365924940).

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

1002513440 is an equidigital number, since it uses as much as digits as its factorization.

1002513440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6265724 (or 6265716 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1002513440 is about 31662.4926371882. The cubic root of 1002513440 is about 1000.8371123807.

Adding to 1002513440 its reverse (443152001), we get a palindrome (1445665441).

The spelling of 1002513440 in words is "one billion, two million, five hundred thirteen thousand, four hundred forty".