361791641 has 2 divisors, whose sum is σ = 361791642. Its totient is φ = 361791640.

The previous prime is 361791611. The next prime is 361791643. The reversal of 361791641 is 146197163.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222457225 + 139334416 = 14915^2 + 11804^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-361791641 is a prime.

Together with 361791643, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 361791595 and 361791604.

It is not a weakly prime, because it can be changed into another prime (361791643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180895820 + 180895821.

It is an arithmetic number, because the mean of its divisors is an integer number (180895821).

Almost surely, 2^361791641 is an apocalyptic number.

It is an amenable number.

361791641 is a deficient number, since it is larger than the sum of its proper divisors (1).

361791641 is an equidigital number, since it uses as much as digits as its factorization.

361791641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 38.

The square root of 361791641 is about 19020.8212493572. The cubic root of 361791641 is about 712.5568337141.

The spelling of 361791641 in words is "three hundred sixty-one million, seven hundred ninety-one thousand, six hundred forty-one".