7953637986 has 96 divisors (see below), whose sum is σ = 20878985088. Its totient is φ = 2136153600.

The previous prime is 7953637961. The next prime is 7953637997. The reversal of 7953637986 is 6897363597.

7953637986 is a `hidden beast` number, since 7 + 9 + 536 + 3 + 7 + 98 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2249476 + ... + 2253008.

It is an arithmetic number, because the mean of its divisors is an integer number (217489428).

Almost surely, 2^7953637986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7953637986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10439492544).

7953637986 is an abundant number, since it is smaller than the sum of its proper divisors (12925347102).

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

7953637986 is a wasteful number, since it uses less digits than its factorization.

7953637986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4616 (or 4613 counting only the distinct ones).

The product of its digits is 51438240, while the sum is 63.

The square root of 7953637986 is about 89183.1709797314. The cubic root of 7953637986 is about 1996.1290113907.

The spelling of 7953637986 in words is "seven billion, nine hundred fifty-three million, six hundred thirty-seven thousand, nine hundred eighty-six".