8148222261 has 6 divisors (see below), whose sum is σ = 11769654390. Its totient is φ = 5432148168.

The previous prime is 8148222233. The next prime is 8148222283. The reversal of 8148222261 is 1622228418.

It can be written as a sum of positive squares in only one way, i.e., 7017245361 + 1130976900 = 83769^2 + 33630^2 .

It is not a de Polignac number, because 8148222261 - 2¹⁵ = 8148189493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8148222221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 452679006 + ... + 452679023.

It is an arithmetic number, because the mean of its divisors is an integer number (1961609065).

Almost surely, 2^8148222261 is an apocalyptic number.

It is an amenable number.

8148222261 is a deficient number, since it is larger than the sum of its proper divisors (3621432129).

8148222261 is a wasteful number, since it uses less digits than its factorization.

8148222261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905358035 (or 905358032 counting only the distinct ones).

The product of its digits is 24576, while the sum is 36.

The square root of 8148222261 is about 90267.5039036751. The cubic root of 8148222261 is about 2012.2763465615.

The spelling of 8148222261 in words is "eight billion, one hundred forty-eight million, two hundred twenty-two thousand, two hundred sixty-one".