4128643446 has 16 divisors (see below), whose sum is σ = 8480457264. Its totient is φ = 1339019424.

The previous prime is 4128643429. The next prime is 4128643447. The reversal of 4128643446 is 6443468214.

It is a junction number, because it is equal to n+sod(n) for n = 4128643398 and 4128643407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4128643447) 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 7 ways as a sum of consecutive naturals, for example, 9298525 + ... + 9298968.

It is an arithmetic number, because the mean of its divisors is an integer number (530028579).

Almost surely, 2^4128643446 is an apocalyptic number.

4128643446 is an abundant number, since it is smaller than the sum of its proper divisors (4351813818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4128643446 is a wasteful number, since it uses less digits than its factorization.

4128643446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18597535.

The product of its digits is 442368, while the sum is 42.

The square root of 4128643446 is about 64254.5208214955. The cubic root of 4128643446 is about 1604.2392069810.

The spelling of 4128643446 in words is "four billion, one hundred twenty-eight million, six hundred forty-three thousand, four hundred forty-six".