4128513881 has 2 divisors, whose sum is σ = 4128513882. Its totient is φ = 4128513880.

The previous prime is 4128513847. The next prime is 4128513911. The reversal of 4128513881 is 1883158214.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3886400281 + 242113600 = 62341^2 + 15560^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4128513881 is a prime.

It is a super-2 number, since 2×4128513881² = 34089253731219364322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4128513821) 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 as a sum of consecutive naturals, namely, 2064256940 + 2064256941.

It is an arithmetic number, because the mean of its divisors is an integer number (2064256941).

Almost surely, 2^4128513881 is an apocalyptic number.

It is an amenable number.

4128513881 is a deficient number, since it is larger than the sum of its proper divisors (1).

4128513881 is an equidigital number, since it uses as much as digits as its factorization.

4128513881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61440, while the sum is 41.

The square root of 4128513881 is about 64253.5125965888. The cubic root of 4128513881 is about 1604.2224254053. Note that the first 3 decimals are identical.

The spelling of 4128513881 in words is "four billion, one hundred twenty-eight million, five hundred thirteen thousand, eight hundred eighty-one".