4375418821 has 2 divisors, whose sum is σ = 4375418822. Its totient is φ = 4375418820.

The previous prime is 4375418759. The next prime is 4375418849. The reversal of 4375418821 is 1288145734.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3601800225 + 773618596 = 60015^2 + 27814^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4375418821 is a prime.

It is a super-3 number, since 3×4375418821³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4375418321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2187709410 + 2187709411.

It is an arithmetic number, because the mean of its divisors is an integer number (2187709411).

Almost surely, 2^4375418821 is an apocalyptic number.

It is an amenable number.

4375418821 is a deficient number, since it is larger than the sum of its proper divisors (1).

4375418821 is an equidigital number, since it uses as much as digits as its factorization.

4375418821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 215040, while the sum is 43.

The square root of 4375418821 is about 66146.9486900190. The cubic root of 4375418821 is about 1635.5853435723.

The spelling of 4375418821 in words is "four billion, three hundred seventy-five million, four hundred eighteen thousand, eight hundred twenty-one".