8787000181 has 2 divisors, whose sum is σ = 8787000182. Its totient is φ = 8787000180.

The previous prime is 8787000133. The next prime is 8787000191. The reversal of 8787000181 is 1810007878.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8786250225 + 749956 = 93735^2 + 866^2 .

It is a cyclic number.

It is not a de Polignac number, because 8787000181 - 2¹¹ = 8786998133 is a prime.

It is a super-2 number, since 2×8787000181² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8787000191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4393500090 + 4393500091.

It is an arithmetic number, because the mean of its divisors is an integer number (4393500091).

Almost surely, 2^8787000181 is an apocalyptic number.

It is an amenable number.

8787000181 is a deficient number, since it is larger than the sum of its proper divisors (1).

8787000181 is an equidigital number, since it uses as much as digits as its factorization.

8787000181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25088, while the sum is 40.

The square root of 8787000181 is about 93739.0003200376. Note that the first 3 decimals coincide. The cubic root of 8787000181 is about 2063.5431045446.

The spelling of 8787000181 in words is "eight billion, seven hundred eighty-seven million, one hundred eighty-one", and thus it is an aban number.