8103202581 has 4 divisors (see below), whose sum is σ = 10804270112. Its totient is φ = 5402135052.

The previous prime is 8103202579. The next prime is 8103202633. The reversal of 8103202581 is 1852023018.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8103202581 - 2¹ = 8103202579 is a prime.

It is a super-2 number, since 2×8103202581² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8103202511) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1350533761 + ... + 1350533766.

It is an arithmetic number, because the mean of its divisors is an integer number (2701067528).

Almost surely, 2^8103202581 is an apocalyptic number.

It is an amenable number.

8103202581 is a deficient number, since it is larger than the sum of its proper divisors (2701067531).

8103202581 is a wasteful number, since it uses less digits than its factorization.

8103202581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2701067530.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 8103202581 is about 90017.7903583508. The cubic root of 8103202581 is about 2008.5634960187.

Adding to 8103202581 its reverse (1852023018), we get a palindrome (9955225599).

The spelling of 8103202581 in words is "eight billion, one hundred three million, two hundred two thousand, five hundred eighty-one".