1948544503 has 2 divisors, whose sum is σ = 1948544504. Its totient is φ = 1948544502.

The previous prime is 1948544501. The next prime is 1948544593. The reversal of 1948544503 is 3054458491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1948544503 - 2¹ = 1948544501 is a prime.

Together with 1948544501, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1948544503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1948544501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 974272251 + 974272252.

It is an arithmetic number, because the mean of its divisors is an integer number (974272252).

Almost surely, 2^1948544503 is an apocalyptic number.

1948544503 is a deficient number, since it is larger than the sum of its proper divisors (1).

1948544503 is an equidigital number, since it uses as much as digits as its factorization.

1948544503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 345600, while the sum is 43.

The square root of 1948544503 is about 44142.3209969752. The cubic root of 1948544503 is about 1249.0220624167.

The spelling of 1948544503 in words is "one billion, nine hundred forty-eight million, five hundred forty-four thousand, five hundred three".