6448634869 has 2 divisors, whose sum is σ = 6448634870. Its totient is φ = 6448634868.

The previous prime is 6448634809. The next prime is 6448634887. The reversal of 6448634869 is 9684368446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6213380625 + 235254244 = 78825^2 + 15338^2 .

It is a cyclic number.

It is not a de Polignac number, because 6448634869 - 2⁷ = 6448634741 is a prime.

It is a super-2 number, since 2×6448634869² = 83169783347365294322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6448634809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3224317434 + 3224317435.

It is an arithmetic number, because the mean of its divisors is an integer number (3224317435).

Almost surely, 2^6448634869 is an apocalyptic number.

It is an amenable number.

6448634869 is a deficient number, since it is larger than the sum of its proper divisors (1).

6448634869 is an equidigital number, since it uses as much as digits as its factorization.

6448634869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23887872, while the sum is 58.

The square root of 6448634869 is about 80303.3926369241. The cubic root of 6448634869 is about 1861.3266510433.

The spelling of 6448634869 in words is "six billion, four hundred forty-eight million, six hundred thirty-four thousand, eight hundred sixty-nine".