19993483103 has 4 divisors (see below), whose sum is σ = 21811072488. Its totient is φ = 18175893720.

The previous prime is 19993483087. The next prime is 19993483109. The reversal of 19993483103 is 30138439991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30138439991 = 11 ⋅2739858181.

It is a cyclic number.

It is not a de Polignac number, because 19993483103 - 2⁴ = 19993483087 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 (19993483109) 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, 908794676 + ... + 908794697.

It is an arithmetic number, because the mean of its divisors is an integer number (5452768122).

Almost surely, 2^19993483103 is an apocalyptic number.

19993483103 is a deficient number, since it is larger than the sum of its proper divisors (1817589385).

19993483103 is a wasteful number, since it uses less digits than its factorization.

19993483103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817589384.

The product of its (nonzero) digits is 629856, while the sum is 50.

The spelling of 19993483103 in words is "nineteen billion, nine hundred ninety-three million, four hundred eighty-three thousand, one hundred three".