8203581541 has 2 divisors, whose sum is σ = 8203581542. Its totient is φ = 8203581540.

The previous prime is 8203581539. The next prime is 8203581593. The reversal of 8203581541 is 1451853028.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4560976225 + 3642605316 = 67535^2 + 60354^2 .

It is a cyclic number.

It is not a de Polignac number, because 8203581541 - 2¹ = 8203581539 is a prime.

Together with 8203581539, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 8203581541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8203581641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4101790770 + 4101790771.

It is an arithmetic number, because the mean of its divisors is an integer number (4101790771).

Almost surely, 2^8203581541 is an apocalyptic number.

It is an amenable number.

8203581541 is a deficient number, since it is larger than the sum of its proper divisors (1).

8203581541 is an equidigital number, since it uses as much as digits as its factorization.

8203581541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 8203581541 is about 90573.6249743820. The cubic root of 8203581541 is about 2016.8232212532.

The spelling of 8203581541 in words is "eight billion, two hundred three million, five hundred eighty-one thousand, five hundred forty-one".