8237196081 has 9 divisors (see below), whose sum is σ = 11898565419. Its totient is φ = 5491282536.

The previous prime is 8237196073. The next prime is 8237196083. The reversal of 8237196081 is 1806917328.

The square root of 8237196081 is 90759.

It is a perfect power (a square), and thus also a powerful number.

8237196081 is a `hidden beast` number, since 8 + 2 + 37 + 1 + 9 + 608 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7888104225 + 349091856 = 88815^2 + 18684^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 8237196081 - 2³ = 8237196073 is a prime.

It is a super-2 number, since 2×8237196081² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8237196083) 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 8 ways as a sum of consecutive naturals, for example, 257151 + ... + 287403.

Almost surely, 2^8237196081 is an apocalyptic number.

8237196081 is the 90759-th square number.

8237196081 is the 45380-th centered octagonal number.

It is an amenable number.

8237196081 is a deficient number, since it is larger than the sum of its proper divisors (3661369338).

8237196081 is an frugal number, since it uses more digits than its factorization.

8237196081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60512 (or 30256 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The cubic root of 8237196081 is about 2019.5741415926.

The spelling of 8237196081 in words is "eight billion, two hundred thirty-seven million, one hundred ninety-six thousand, eighty-one".