8199537428 has 6 divisors (see below), whose sum is σ = 14349190506. Its totient is φ = 4099768712.

The previous prime is 8199537407. The next prime is 8199537433. The reversal of 8199537428 is 8247359918.

It can be written as a sum of positive squares in only one way, i.e., 6930895504 + 1268641924 = 83252^2 + 35618^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1024942175 + ... + 1024942182.

It is an arithmetic number, because the mean of its divisors is an integer number (2391531751).

Almost surely, 2^8199537428 is an apocalyptic number.

It is an amenable number.

8199537428 is a deficient number, since it is larger than the sum of its proper divisors (6149653078).

8199537428 is a wasteful number, since it uses less digits than its factorization.

8199537428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049884361 (or 2049884359 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 56.

The square root of 8199537428 is about 90551.2972187588. The cubic root of 8199537428 is about 2016.4917562057.

The spelling of 8199537428 in words is "eight billion, one hundred ninety-nine million, five hundred thirty-seven thousand, four hundred twenty-eight".