961943903 has 2 divisors, whose sum is σ = 961943904. Its totient is φ = 961943902.

The previous prime is 961943893. The next prime is 961943909. The reversal of 961943903 is 309349169.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 961943903 - 2¹² = 961939807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (961943909) 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, 480971951 + 480971952.

It is an arithmetic number, because the mean of its divisors is an integer number (480971952).

Almost surely, 2^961943903 is an apocalyptic number.

961943903 is a deficient number, since it is larger than the sum of its proper divisors (1).

961943903 is an equidigital number, since it uses as much as digits as its factorization.

961943903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157464, while the sum is 44.

The square root of 961943903 is about 31015.2205054228. The cubic root of 961943903 is about 987.1502248495.

The spelling of 961943903 in words is "nine hundred sixty-one million, nine hundred forty-three thousand, nine hundred three".