8102899181 has 12 divisors (see below), whose sum is σ = 8781577812. Its totient is φ = 7473263616.

The previous prime is 8102899151. The next prime is 8102899199. The reversal of 8102899181 is 1819982018.

It can be written as a sum of positive squares in 6 ways, for example, as 990675625 + 7112223556 = 31475^2 + 84334^2 .

It is not a de Polignac number, because 8102899181 - 2¹⁴ = 8102882797 is a prime.

It is a super-2 number, since 2×8102899181² (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 (8102899111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185975 + ... + 225371.

It is an arithmetic number, because the mean of its divisors is an integer number (731798151).

Almost surely, 2^8102899181 is an apocalyptic number.

It is an amenable number.

8102899181 is a deficient number, since it is larger than the sum of its proper divisors (678678631).

8102899181 is a wasteful number, since it uses less digits than its factorization.

8102899181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40640 (or 40627 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 47.

The square root of 8102899181 is about 90016.1051201395. The cubic root of 8102899181 is about 2008.5384275036.

The spelling of 8102899181 in words is "eight billion, one hundred two million, eight hundred ninety-nine thousand, one hundred eighty-one".