19388430049 has 8 divisors (see below), whose sum is σ = 19551097280. Its totient is φ = 19226214000.

The previous prime is 19388430041. The next prime is 19388430077. The reversal of 19388430049 is 94003488391.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19388430049 - 2³ = 19388430041 is a prime.

It is a super-2 number, since 2×19388430049² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19388429984 and 19388430011.

It is not an unprimeable number, because it can be changed into a prime (19388430041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26214 + ... + 198655.

It is an arithmetic number, because the mean of its divisors is an integer number (2443887160).

Almost surely, 2^19388430049 is an apocalyptic number.

It is an amenable number.

19388430049 is a deficient number, since it is larger than the sum of its proper divisors (162667231).

19388430049 is a wasteful number, since it uses less digits than its factorization.

19388430049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225591.

The product of its (nonzero) digits is 746496, while the sum is 49.

The spelling of 19388430049 in words is "nineteen billion, three hundred eighty-eight million, four hundred thirty thousand, forty-nine".