3682173821 has 2 divisors, whose sum is σ = 3682173822. Its totient is φ = 3682173820.

The previous prime is 3682173791. The next prime is 3682173841. The reversal of 3682173821 is 1283712863.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2471481796 + 1210692025 = 49714^2 + 34795^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3682173821 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3682173841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1841086910 + 1841086911.

It is an arithmetic number, because the mean of its divisors is an integer number (1841086911).

Almost surely, 2^3682173821 is an apocalyptic number.

It is an amenable number.

3682173821 is a deficient number, since it is larger than the sum of its proper divisors (1).

3682173821 is an equidigital number, since it uses as much as digits as its factorization.

3682173821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 41.

The square root of 3682173821 is about 60680.9180962187. The cubic root of 3682173821 is about 1544.1924639773.

The spelling of 3682173821 in words is "three billion, six hundred eighty-two million, one hundred seventy-three thousand, eight hundred twenty-one".