945878503 has 2 divisors, whose sum is σ = 945878504. Its totient is φ = 945878502.

The previous prime is 945878489. The next prime is 945878533. The reversal of 945878503 is 305878549.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 945878503 - 2⁹ = 945877991 is a prime.

It is a super-2 number, since 2×945878503² = 1789372284875042018, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (945878533) 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, 472939251 + 472939252.

It is an arithmetic number, because the mean of its divisors is an integer number (472939252).

Almost surely, 2^945878503 is an apocalyptic number.

945878503 is a deficient number, since it is larger than the sum of its proper divisors (1).

945878503 is an equidigital number, since it uses as much as digits as its factorization.

945878503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1209600, while the sum is 49.

The square root of 945878503 is about 30755.1378309381. The cubic root of 945878503 is about 981.6238879295.

The spelling of 945878503 in words is "nine hundred forty-five million, eight hundred seventy-eight thousand, five hundred three".