361605919 has 2 divisors, whose sum is σ = 361605920. Its totient is φ = 361605918.

The previous prime is 361605899. The next prime is 361605941. The reversal of 361605919 is 919506163.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 361605919 - 2⁵ = 361605887 is a prime.

It is a super-2 number, since 2×361605919² = 261517681311669122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (361605949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180802959 + 180802960.

It is an arithmetic number, because the mean of its divisors is an integer number (180802960).

Almost surely, 2^361605919 is an apocalyptic number.

361605919 is a deficient number, since it is larger than the sum of its proper divisors (1).

361605919 is an equidigital number, since it uses as much as digits as its factorization.

361605919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 361605919 is about 19015.9385516466. The cubic root of 361605919 is about 712.4348849491.

The spelling of 361605919 in words is "three hundred sixty-one million, six hundred five thousand, nine hundred nineteen".