7994130861 has 8 divisors (see below), whose sum is σ = 11122269120. Its totient is φ = 5097706592.

The previous prime is 7994130853. The next prime is 7994130869. The reversal of 7994130861 is 1680314997.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7994130853) and next prime (7994130869).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7994130861 - 2³ = 7994130853 is a prime.

It is a super-2 number, since 2×7994130861² (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 7994130861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7994130869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57928416 + ... + 57928553.

It is an arithmetic number, because the mean of its divisors is an integer number (1390283640).

Almost surely, 2^7994130861 is an apocalyptic number.

It is an amenable number.

7994130861 is a deficient number, since it is larger than the sum of its proper divisors (3128138259).

7994130861 is a wasteful number, since it uses less digits than its factorization.

7994130861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115856995.

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 7994130861 is about 89409.9035957427. The cubic root of 7994130861 is about 1999.5107854276.

The spelling of 7994130861 in words is "seven billion, nine hundred ninety-four million, one hundred thirty thousand, eight hundred sixty-one".