19490103 has 12 divisors (see below), whose sum is σ = 29060928. Its totient is φ = 12574080.

The previous prime is 19490087. The next prime is 19490123. The reversal of 19490103 is 30109491.

It is not a de Polignac number, because 19490103 - 2⁴ = 19490087 is a prime.

It is a super-2 number, since 2×19490103² = 759728229901218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19490123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34650 + ... + 35207.

It is an arithmetic number, because the mean of its divisors is an integer number (2421744).

Almost surely, 2^19490103 is an apocalyptic number.

19490103 is a deficient number, since it is larger than the sum of its proper divisors (9570825).

19490103 is a wasteful number, since it uses less digits than its factorization.

19490103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69894 (or 69891 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 19490103 is about 4414.7596763584. The cubic root of 19490103 is about 269.1150864409.

Adding to 19490103 its reverse (30109491), we get a palindrome (49599594).

The spelling of 19490103 in words is "nineteen million, four hundred ninety thousand, one hundred three".