4418264821 has 2 divisors, whose sum is σ = 4418264822. Its totient is φ = 4418264820.

The previous prime is 4418264803. The next prime is 4418264839. The reversal of 4418264821 is 1284628144.

It is a balanced prime because it is at equal distance from previous prime (4418264803) and next prime (4418264839).

It can be written as a sum of positive squares in only one way, i.e., 2990558596 + 1427706225 = 54686^2 + 37785^2 .

It is a cyclic number.

It is not a de Polignac number, because 4418264821 - 2⁹ = 4418264309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4418264891) 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 as a sum of consecutive naturals, namely, 2209132410 + 2209132411.

It is an arithmetic number, because the mean of its divisors is an integer number (2209132411).

Almost surely, 2^4418264821 is an apocalyptic number.

It is an amenable number.

4418264821 is a deficient number, since it is larger than the sum of its proper divisors (1).

4418264821 is an equidigital number, since it uses as much as digits as its factorization.

4418264821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 98304, while the sum is 40.

The square root of 4418264821 is about 66470.0294945023. The cubic root of 4418264821 is about 1640.9067983617.

The spelling of 4418264821 in words is "four billion, four hundred eighteen million, two hundred sixty-four thousand, eight hundred twenty-one".