8128609862 has 16 divisors (see below), whose sum is σ = 12456433152. Its totient is φ = 3976522440.

The previous prime is 8128609861. The next prime is 8128609889. The reversal of 8128609862 is 2689068218.

It is a self number, because there is not a number n which added to its sum of digits gives 8128609862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8128609861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313037 + ... + 338007.

It is an arithmetic number, because the mean of its divisors is an integer number (778527072).

Almost surely, 2^8128609862 is an apocalyptic number.

8128609862 is a deficient number, since it is larger than the sum of its proper divisors (4327823290).

8128609862 is a wasteful number, since it uses less digits than its factorization.

8128609862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28483.

The product of its (nonzero) digits is 663552, while the sum is 50.

The square root of 8128609862 is about 90158.8035745817. The cubic root of 8128609862 is about 2010.6605637282.

The spelling of 8128609862 in words is "eight billion, one hundred twenty-eight million, six hundred nine thousand, eight hundred sixty-two".