361538249 has 2 divisors, whose sum is σ = 361538250. Its totient is φ = 361538248.

The previous prime is 361538239. The next prime is 361538263. The reversal of 361538249 is 942835163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 308248249 + 53290000 = 17557^2 + 7300^2 .

It is a cyclic number.

It is not a de Polignac number, because 361538249 - 2²⁰ = 360489673 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (361538209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180769124 + 180769125.

It is an arithmetic number, because the mean of its divisors is an integer number (180769125).

Almost surely, 2^361538249 is an apocalyptic number.

It is an amenable number.

361538249 is a deficient number, since it is larger than the sum of its proper divisors (1).

361538249 is an equidigital number, since it uses as much as digits as its factorization.

361538249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 41.

The square root of 361538249 is about 19014.1591715227. The cubic root of 361538249 is about 712.3904411004.

It can be divided in two parts, 3615 and 38249, that multiplied together give a triangular number (138270135 = T₁₆₆₂₉).

The spelling of 361538249 in words is "three hundred sixty-one million, five hundred thirty-eight thousand, two hundred forty-nine".