3472371821 has 2 divisors, whose sum is σ = 3472371822. Its totient is φ = 3472371820.

The previous prime is 3472371803. The next prime is 3472371883. The reversal of 3472371821 is 1281732743.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3177013225 + 295358596 = 56365^2 + 17186^2 .

It is an emirp because it is prime and its reverse (1281732743) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3472371821 - 2³⁰ = 2398629997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3472361821) 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, 1736185910 + 1736185911.

It is an arithmetic number, because the mean of its divisors is an integer number (1736185911).

Almost surely, 2^3472371821 is an apocalyptic number.

It is an amenable number.

3472371821 is a deficient number, since it is larger than the sum of its proper divisors (1).

3472371821 is an equidigital number, since it uses as much as digits as its factorization.

3472371821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 38.

The square root of 3472371821 is about 58926.8344729292. The cubic root of 3472371821 is about 1514.2889075027.

The spelling of 3472371821 in words is "three billion, four hundred seventy-two million, three hundred seventy-one thousand, eight hundred twenty-one".