8127651149 has 6 divisors (see below), whose sum is σ = 8321063886. Its totient is φ = 7938634200.

The previous prime is 8127651121. The next prime is 8127651241. The reversal of 8127651149 is 9411567218.

It can be written as a sum of positive squares in only one way, i.e., 4580853124 + 3546798025 = 67682^2 + 59555^2 .

It is a de Polignac number, because none of the positive numbers 2^k-8127651149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8127650149) 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 5 ways as a sum of consecutive naturals, for example, 2196002 + ... + 2199699.

It is an arithmetic number, because the mean of its divisors is an integer number (1386843981).

Almost surely, 2^8127651149 is an apocalyptic number.

It is an amenable number.

8127651149 is a deficient number, since it is larger than the sum of its proper divisors (193412737).

8127651149 is an equidigital number, since it uses as much as digits as its factorization.

8127651149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4395787 (or 4395744 counting only the distinct ones).

The product of its digits is 120960, while the sum is 44.

The square root of 8127651149 is about 90153.4866158819. The cubic root of 8127651149 is about 2010.5815128104.

The spelling of 8127651149 in words is "eight billion, one hundred twenty-seven million, six hundred fifty-one thousand, one hundred forty-nine".