19138124203 has 16 divisors (see below), whose sum is σ = 21097914336. Its totient is φ = 17215511040.

The previous prime is 19138124191. The next prime is 19138124219. The reversal of 19138124203 is 30242183191.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 19138124203 - 2⁵ = 19138124171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19138124293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 749401 + ... + 774517.

It is an arithmetic number, because the mean of its divisors is an integer number (1318619646).

Almost surely, 2^19138124203 is an apocalyptic number.

19138124203 is a deficient number, since it is larger than the sum of its proper divisors (1959790133).

19138124203 is a wasteful number, since it uses less digits than its factorization.

19138124203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25854.

The product of its (nonzero) digits is 10368, while the sum is 34.

It can be divided in two parts, 19138 and 124203, that added together give a palindrome (143341).

The spelling of 19138124203 in words is "nineteen billion, one hundred thirty-eight million, one hundred twenty-four thousand, two hundred three".