6931640352 has 192 divisors, whose sum is σ = 22852972800. Its totient is φ = 1828012032.

The previous prime is 6931640293. The next prime is 6931640381. The reversal of 6931640352 is 2530461396.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 6931640352.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 419968 + ... + 436160.

It is an arithmetic number, because the mean of its divisors is an integer number (119025900).

Almost surely, 2^6931640352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6931640352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11426486400).

6931640352 is an abundant number, since it is smaller than the sum of its proper divisors (15921332448).

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

6931640352 is a wasteful number, since it uses less digits than its factorization.

6931640352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16240 (or 16218 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 6931640352 is about 83256.4733339096. The cubic root of 6931640352 is about 1906.6837873719.

The spelling of 6931640352 in words is "six billion, nine hundred thirty-one million, six hundred forty thousand, three hundred fifty-two".