19440103 has 2 divisors, whose sum is σ = 19440104. Its totient is φ = 19440102.

The previous prime is 19440101. The next prime is 19440139. The reversal of 19440103 is 30104491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19440103 - 2¹ = 19440101 is a prime.

Together with 19440101, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19440101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9720051 + 9720052.

It is an arithmetic number, because the mean of its divisors is an integer number (9720052).

Almost surely, 2^19440103 is an apocalyptic number.

19440103 is a deficient number, since it is larger than the sum of its proper divisors (1).

19440103 is an equidigital number, since it uses as much as digits as its factorization.

19440103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 19440103 is about 4409.0932174314. The cubic root of 19440103 is about 268.8847596740.

Adding to 19440103 its reverse (30104491), we get a palindrome (49544594).

The spelling of 19440103 in words is "nineteen million, four hundred forty thousand, one hundred three".