19839249043 has 8 divisors (see below), whose sum is σ = 20331188640. Its totient is φ = 19347693120.

The previous prime is 19839249029. The next prime is 19839249049. The reversal of 19839249043 is 34094293891.

It is a happy number.

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 19839249043 - 2⁵ = 19839249011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19839249049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10218 + ... + 199456.

It is an arithmetic number, because the mean of its divisors is an integer number (2541398580).

Almost surely, 2^19839249043 is an apocalyptic number.

19839249043 is a deficient number, since it is larger than the sum of its proper divisors (491939597).

19839249043 is a wasteful number, since it uses less digits than its factorization.

19839249043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191837.

The product of its (nonzero) digits is 1679616, while the sum is 52.

The spelling of 19839249043 in words is "nineteen billion, eight hundred thirty-nine million, two hundred forty-nine thousand, forty-three".