7919844660 has 480 divisors, whose sum is σ = 31582881792. Its totient is φ = 1616163840.

The previous prime is 7919844641. The next prime is 7919844703. The reversal of 7919844660 is 664489197.

7919844660 is a `hidden beast` number, since 7 + 9 + 198 + 446 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 7919844597 and 7919844606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 4569154 + ... + 4570886.

Almost surely, 2^7919844660 is an apocalyptic number.

7919844660 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 7919844660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15791440896).

7919844660 is an abundant number, since it is smaller than the sum of its proper divisors (23663037132).

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

7919844660 is a wasteful number, since it uses less digits than its factorization.

7919844660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805 (or 1794 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The square root of 7919844660 is about 88993.5090891465. The cubic root of 7919844660 is about 1993.2979547144.

The spelling of 7919844660 in words is "seven billion, nine hundred nineteen million, eight hundred forty-four thousand, six hundred sixty".