8228647538 has 4 divisors (see below), whose sum is σ = 12342971310. Its totient is φ = 4114323768.

The previous prime is 8228647507. The next prime is 8228647541. The reversal of 8228647538 is 8357468228.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6397920169 + 1830727369 = 79987^2 + 42787^2 .

It is a super-2 number, since 2×8228647538² (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 8228647538.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2057161883 + ... + 2057161886.

Almost surely, 2^8228647538 is an apocalyptic number.

8228647538 is a deficient number, since it is larger than the sum of its proper divisors (4114323772).

8228647538 is a wasteful number, since it uses less digits than its factorization.

8228647538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4114323771.

The product of its digits is 5160960, while the sum is 53.

The square root of 8228647538 is about 90711.8930350370. The cubic root of 8228647538 is about 2018.8752633178.

The spelling of 8228647538 in words is "eight billion, two hundred twenty-eight million, six hundred forty-seven thousand, five hundred thirty-eight".