8187334469 has 2 divisors, whose sum is σ = 8187334470. Its totient is φ = 8187334468.

The previous prime is 8187334451. The next prime is 8187334483. The reversal of 8187334469 is 9644337818.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6816483844 + 1370850625 = 82562^2 + 37025^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8187334469 is a prime.

It is a super-2 number, since 2×8187334469² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8187334469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8187334429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4093667234 + 4093667235.

It is an arithmetic number, because the mean of its divisors is an integer number (4093667235).

Almost surely, 2^8187334469 is an apocalyptic number.

It is an amenable number.

8187334469 is a deficient number, since it is larger than the sum of its proper divisors (1).

8187334469 is an equidigital number, since it uses as much as digits as its factorization.

8187334469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 53.

The square root of 8187334469 is about 90483.8906601612. The cubic root of 8187334469 is about 2015.4909117984.

The spelling of 8187334469 in words is "eight billion, one hundred eighty-seven million, three hundred thirty-four thousand, four hundred sixty-nine".