19124105203 has 4 divisors (see below), whose sum is σ = 21856120240. Its totient is φ = 16392090168.

The previous prime is 19124105173. The next prime is 19124105213. The reversal of 19124105203 is 30250142191.

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-19124105203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19124105213) 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, 1366007508 + ... + 1366007521.

It is an arithmetic number, because the mean of its divisors is an integer number (5464030060).

Almost surely, 2^19124105203 is an apocalyptic number.

19124105203 is a deficient number, since it is larger than the sum of its proper divisors (2732015037).

19124105203 is an equidigital number, since it uses as much as digits as its factorization.

19124105203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2732015036.

The product of its (nonzero) digits is 2160, while the sum is 28.

Adding to 19124105203 its reverse (30250142191), we get a palindrome (49374247394).

The spelling of 19124105203 in words is "nineteen billion, one hundred twenty-four million, one hundred five thousand, two hundred three".