4169129128 has 8 divisors (see below), whose sum is σ = 7817117130. Its totient is φ = 2084564560.

The previous prime is 4169129123. The next prime is 4169129141. The reversal of 4169129128 is 8219219614.

It can be written as a sum of positive squares in only one way, i.e., 3943588804 + 225540324 = 62798^2 + 15018^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (4169129123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260570563 + ... + 260570578.

Almost surely, 2^4169129128 is an apocalyptic number.

It is an amenable number.

4169129128 is a deficient number, since it is larger than the sum of its proper divisors (3647988002).

4169129128 is a wasteful number, since it uses less digits than its factorization.

4169129128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521141147 (or 521141143 counting only the distinct ones).

The product of its digits is 62208, while the sum is 43.

The square root of 4169129128 is about 64568.7937629316. The cubic root of 4169129128 is about 1609.4659092860.

The spelling of 4169129128 in words is "four billion, one hundred sixty-nine million, one hundred twenty-nine thousand, one hundred twenty-eight".