7813303840 has 24 divisors (see below), whose sum is σ = 18458930700. Its totient is φ = 3125321472.

The previous prime is 7813303837. The next prime is 7813303873. The reversal of 7813303840 is 483033187.

It can be written as a sum of positive squares in 2 ways, for example, as 7612911504 + 200392336 = 87252^2 + 14156^2 .

It is a super-2 number, since 2×7813303840² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7813303840.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24416415 + ... + 24416734.

Almost surely, 2^7813303840 is an apocalyptic number.

It is an amenable number.

7813303840 is an abundant number, since it is smaller than the sum of its proper divisors (10645626860).

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

7813303840 is a wasteful number, since it uses less digits than its factorization.

7813303840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48833164 (or 48833156 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 7813303840 is about 88392.8947370771. The cubic root of 7813303840 is about 1984.3193668376.

The spelling of 7813303840 in words is "seven billion, eight hundred thirteen million, three hundred three thousand, eight hundred forty".