8187649028 has 12 divisors (see below), whose sum is σ = 15430569420. Its totient is φ = 3778914912.

The previous prime is 8187649009. The next prime is 8187649051. The reversal of 8187649028 is 8209467818.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4095744004 + 4091905024 = 63998^2 + 63968^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78727343 + ... + 78727446.

It is an arithmetic number, because the mean of its divisors is an integer number (1285880785).

Almost surely, 2^8187649028 is an apocalyptic number.

It is an amenable number.

8187649028 is a deficient number, since it is larger than the sum of its proper divisors (7242920392).

8187649028 is a wasteful number, since it uses less digits than its factorization.

8187649028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157454806 (or 157454804 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 53.

The square root of 8187649028 is about 90485.6288479005. The cubic root of 8187649028 is about 2015.5167233203.

The spelling of 8187649028 in words is "eight billion, one hundred eighty-seven million, six hundred forty-nine thousand, twenty-eight".