8103681821 has 8 divisors (see below), whose sum is σ = 8522924544. Its totient is φ = 7694303760.

The previous prime is 8103681809. The next prime is 8103681871. The reversal of 8103681821 is 1281863018.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8103681821 - 2³⁰ = 7029939997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8103681871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2464481 + ... + 2467766.

It is an arithmetic number, because the mean of its divisors is an integer number (1065365568).

Almost surely, 2^8103681821 is an apocalyptic number.

It is an amenable number.

8103681821 is a deficient number, since it is larger than the sum of its proper divisors (419242723).

8103681821 is a wasteful number, since it uses less digits than its factorization.

8103681821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4932331.

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 8103681821 is about 90020.4522372555. The cubic root of 8103681821 is about 2008.6030920914.

The spelling of 8103681821 in words is "eight billion, one hundred three million, six hundred eighty-one thousand, eight hundred twenty-one".