7913913840 has 200 divisors, whose sum is σ = 31412974560. Its totient is φ = 1808884224.

The previous prime is 7913913793. The next prime is 7913913851. The reversal of 7913913840 is 483193197.

It is a super-3 number, since 3×7913913840³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 41875 + ... + 132594.

Almost surely, 2^7913913840 is an apocalyptic number.

7913913840 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7913913840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15706487280).

7913913840 is an abundant number, since it is smaller than the sum of its proper divisors (23499060720).

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

7913913840 is a wasteful number, since it uses less digits than its factorization.

7913913840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174501 (or 174486 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 7913913840 is about 88960.1812048514. The cubic root of 7913913840 is about 1992.8002663516.

The spelling of 7913913840 in words is "seven billion, nine hundred thirteen million, nine hundred thirteen thousand, eight hundred forty".