3474243821 has 2 divisors, whose sum is σ = 3474243822. Its totient is φ = 3474243820.

The previous prime is 3474243719. The next prime is 3474243827. The reversal of 3474243821 is 1283424743.

It is a happy number.

3474243821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1865030596 + 1609213225 = 43186^2 + 40115^2 .

It is a cyclic number.

It is not a de Polignac number, because 3474243821 - 2¹⁸ = 3473981677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3474243827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1737121910 + 1737121911.

It is an arithmetic number, because the mean of its divisors is an integer number (1737121911).

Almost surely, 2^3474243821 is an apocalyptic number.

It is an amenable number.

3474243821 is a deficient number, since it is larger than the sum of its proper divisors (1).

3474243821 is an equidigital number, since it uses as much as digits as its factorization.

3474243821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 38.

The square root of 3474243821 is about 58942.7164372325. The cubic root of 3474243821 is about 1514.5609827793.

The spelling of 3474243821 in words is "three billion, four hundred seventy-four million, two hundred forty-three thousand, eight hundred twenty-one".