19249843103 has 4 divisors (see below), whose sum is σ = 20262992760. Its totient is φ = 18236693448.

The previous prime is 19249843061. The next prime is 19249843163. The reversal of 19249843103 is 30134894291.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19249843103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19249843163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 506574800 + ... + 506574837.

It is an arithmetic number, because the mean of its divisors is an integer number (5065748190).

Almost surely, 2^19249843103 is an apocalyptic number.

19249843103 is a deficient number, since it is larger than the sum of its proper divisors (1013149657).

19249843103 is a wasteful number, since it uses less digits than its factorization.

19249843103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013149656.

The product of its (nonzero) digits is 186624, while the sum is 44.

The spelling of 19249843103 in words is "nineteen billion, two hundred forty-nine million, eight hundred forty-three thousand, one hundred three".