7975971634 has 8 divisors (see below), whose sum is σ = 12667719708. Its totient is φ = 3753398400.

The previous prime is 7975971631. The next prime is 7975971673. The reversal of 7975971634 is 4361795797.

It can be written as a sum of positive squares in 2 ways, for example, as 7683048409 + 292923225 = 87653^2 + 17115^2 .

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

It is a super-2 number, since 2×7975971634² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7975971631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117293667 + ... + 117293734.

Almost surely, 2^7975971634 is an apocalyptic number.

7975971634 is a deficient number, since it is larger than the sum of its proper divisors (4691748074).

7975971634 is a wasteful number, since it uses less digits than its factorization.

7975971634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234587420.

The product of its digits is 10001880, while the sum is 58.

The square root of 7975971634 is about 89308.2954377699. The cubic root of 7975971634 is about 1997.9956280843.

The spelling of 7975971634 in words is "seven billion, nine hundred seventy-five million, nine hundred seventy-one thousand, six hundred thirty-four".