4128695269 has 18 divisors (see below), whose sum is σ = 4439117106. Its totient is φ = 3838389120.

The previous prime is 4128695257. The next prime is 4128695341. The reversal of 4128695269 is 9625968214.

It can be written as a sum of positive squares in 3 ways, for example, as 494172900 + 3634522369 = 22230^2 + 60287^2 .

It is not a de Polignac number, because 4128695269 - 2¹¹ = 4128693221 is a prime.

It is a super-2 number, since 2×4128695269² = 34092249248525964722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4128695969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9534877 + ... + 9535309.

It is an arithmetic number, because the mean of its divisors is an integer number (246617617).

Almost surely, 2^4128695269 is an apocalyptic number.

It is an amenable number.

4128695269 is a deficient number, since it is larger than the sum of its proper divisors (310421837).

4128695269 is an frugal number, since it uses more digits than its factorization.

4128695269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965 (or 513 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 52.

The square root of 4128695269 is about 64254.9240836840. The cubic root of 4128695269 is about 1604.2459191244.

The spelling of 4128695269 in words is "four billion, one hundred twenty-eight million, six hundred ninety-five thousand, two hundred sixty-nine".