19703059249 has 4 divisors (see below), whose sum is σ = 19703358064. Its totient is φ = 19702760436.

The previous prime is 19703059247. The next prime is 19703059289. The reversal of 19703059249 is 94295030791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94295030791 = 13 ⋅7253463907.

It is a cyclic number.

It is not a de Polignac number, because 19703059249 - 2¹ = 19703059247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19703059247) 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, 2067 + ... + 198520.

It is an arithmetic number, because the mean of its divisors is an integer number (4925839516).

Almost surely, 2^19703059249 is an apocalyptic number.

It is an amenable number.

19703059249 is a deficient number, since it is larger than the sum of its proper divisors (298815).

19703059249 is an equidigital number, since it uses as much as digits as its factorization.

19703059249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298814.

The product of its (nonzero) digits is 612360, while the sum is 49.

The spelling of 19703059249 in words is "nineteen billion, seven hundred three million, fifty-nine thousand, two hundred forty-nine".