7987869634 has 16 divisors (see below), whose sum is σ = 12373675776. Its totient is φ = 3863422800.

The previous prime is 7987869601. The next prime is 7987869641. The reversal of 7987869634 is 4369687897.

It is a super-2 number, since 2×7987869634² (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 7987869634.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122764 + ... + 176200.

It is an arithmetic number, because the mean of its divisors is an integer number (773354736).

Almost surely, 2^7987869634 is an apocalyptic number.

7987869634 is a deficient number, since it is larger than the sum of its proper divisors (4385806142).

7987869634 is a wasteful number, since it uses less digits than its factorization.

7987869634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55881.

The product of its digits is 109734912, while the sum is 67.

The square root of 7987869634 is about 89374.8825677550. The cubic root of 7987869634 is about 1998.9886248130.

The spelling of 7987869634 in words is "seven billion, nine hundred eighty-seven million, eight hundred sixty-nine thousand, six hundred thirty-four".