361821841 has 2 divisors, whose sum is σ = 361821842. Its totient is φ = 361821840.

The previous prime is 361821797. The next prime is 361821847. The reversal of 361821841 is 148128163.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 354004225 + 7817616 = 18815^2 + 2796^2 .

It is a cyclic number.

It is not a de Polignac number, because 361821841 - 2⁹ = 361821329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 361821797 and 361821806.

It is not a weakly prime, because it can be changed into another prime (361821847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180910920 + 180910921.

It is an arithmetic number, because the mean of its divisors is an integer number (180910921).

Almost surely, 2^361821841 is an apocalyptic number.

It is an amenable number.

361821841 is a deficient number, since it is larger than the sum of its proper divisors (1).

361821841 is an equidigital number, since it uses as much as digits as its factorization.

361821841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 34.

The square root of 361821841 is about 19021.6150996702. The cubic root of 361821841 is about 712.5766596905.

The spelling of 361821841 in words is "three hundred sixty-one million, eight hundred twenty-one thousand, eight hundred forty-one".