8204021537 has 2 divisors, whose sum is σ = 8204021538. Its totient is φ = 8204021536.

The previous prime is 8204021521. The next prime is 8204021543. The reversal of 8204021537 is 7351204028.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6756675601 + 1447345936 = 82199^2 + 38044^2 .

It is a cyclic number.

It is not a de Polignac number, because 8204021537 - 2⁴ = 8204021521 is a prime.

It is not a weakly prime, because it can be changed into another prime (8204020537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4102010768 + 4102010769.

It is an arithmetic number, because the mean of its divisors is an integer number (4102010769).

Almost surely, 2^8204021537 is an apocalyptic number.

It is an amenable number.

8204021537 is a deficient number, since it is larger than the sum of its proper divisors (1).

8204021537 is an equidigital number, since it uses as much as digits as its factorization.

8204021537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 8204021537 is about 90576.0538829110. The cubic root of 8204021537 is about 2016.8592777927.

The spelling of 8204021537 in words is "eight billion, two hundred four million, twenty-one thousand, five hundred thirty-seven".