361903 has 2 divisors, whose sum is σ = 361904. Its totient is φ = 361902.

The previous prime is 361901. The next prime is 361909. The reversal of 361903 is 309163.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 361903 - 2¹ = 361901 is a prime.

Together with 361901, it forms a pair of twin primes.

361903 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (361901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180951 + 180952.

It is an arithmetic number, because the mean of its divisors is an integer number (180952).

2³⁶¹⁹⁰³ is an apocalyptic number.

361903 is a deficient number, since it is larger than the sum of its proper divisors (1).

361903 is an equidigital number, since it uses as much as digits as its factorization.

361903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 22.

The square root of 361903 is about 601.5837431314. The cubic root of 361903 is about 71.2629934239.

The spelling of 361903 in words is "three hundred sixty-one thousand, nine hundred three".