7987614181 has 2 divisors, whose sum is σ = 7987614182. Its totient is φ = 7987614180.

The previous prime is 7987614143. The next prime is 7987614191. The reversal of 7987614181 is 1814167897.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7890768900 + 96845281 = 88830^2 + 9841^2 .

It is an emirp because it is prime and its reverse (1814167897) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7987614181 - 2¹⁹ = 7987089893 is a prime.

It is a super-2 number, since 2×7987614181² (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 (7987614191) 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 as a sum of consecutive naturals, namely, 3993807090 + 3993807091.

It is an arithmetic number, because the mean of its divisors is an integer number (3993807091).

Almost surely, 2^7987614181 is an apocalyptic number.

It is an amenable number.

7987614181 is a deficient number, since it is larger than the sum of its proper divisors (1).

7987614181 is an equidigital number, since it uses as much as digits as its factorization.

7987614181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 52.

The square root of 7987614181 is about 89373.4534467590. The cubic root of 7987614181 is about 1998.9673152896.

The spelling of 7987614181 in words is "seven billion, nine hundred eighty-seven million, six hundred fourteen thousand, one hundred eighty-one".