361618330181 has 2 divisors, whose sum is σ = 361618330182. Its totient is φ = 361618330180.

The previous prime is 361618330141. The next prime is 361618330189. The reversal of 361618330181 is 181033816163.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 308319220225 + 53299109956 = 555265^2 + 230866^2 .

It is an emirp because it is prime and its reverse (181033816163) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-361618330181 is a prime.

It is a super-2 number, since 2×361618330181² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (361618330189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180809165090 + 180809165091.

It is an arithmetic number, because the mean of its divisors is an integer number (180809165091).

Almost surely, 2^361618330181 is an apocalyptic number.

It is an amenable number.

361618330181 is a deficient number, since it is larger than the sum of its proper divisors (1).

361618330181 is an equidigital number, since it uses as much as digits as its factorization.

361618330181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 41.

The spelling of 361618330181 in words is "three hundred sixty-one billion, six hundred eighteen million, three hundred thirty thousand, one hundred eighty-one".