8197370181 has 270 divisors, whose sum is σ = 17122340466. Its totient is φ = 3891888000.

The previous prime is 8197370171. The next prime is 8197370189. The reversal of 8197370181 is 1810737918.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 693479556 + 7503890625 = 26334^2 + 86625^2 .

It is not a de Polignac number, because 8197370181 - 2⁵ = 8197370149 is a prime.

It is a super-2 number, since 2×8197370181² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8197370189) 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 269 ways as a sum of consecutive naturals, for example, 81162031 + ... + 81162131.

Almost surely, 2^8197370181 is an apocalyptic number.

8197370181 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

8197370181 is an abundant number, since it is smaller than the sum of its proper divisors (8924970285).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8197370181 is a wasteful number, since it uses less digits than its factorization.

8197370181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 45.

The square root of 8197370181 is about 90539.3294706781. The cubic root of 8197370181 is about 2016.3140786704.

The spelling of 8197370181 in words is "eight billion, one hundred ninety-seven million, three hundred seventy thousand, one hundred eighty-one".