19839857714 has 8 divisors (see below), whose sum is σ = 30321292140. Its totient is φ = 9732760336.

The previous prime is 19839857699. The next prime is 19839857731. The reversal of 19839857714 is 41775893891.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19232974489 + 606883225 = 138683^2 + 24635^2 .

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

It is a super-2 number, since 2×19839857714² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93584129 + ... + 93584340.

Almost surely, 2^19839857714 is an apocalyptic number.

19839857714 is a deficient number, since it is larger than the sum of its proper divisors (10481434426).

19839857714 is a wasteful number, since it uses less digits than its factorization.

19839857714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187168524.

The product of its digits is 15240960, while the sum is 62.

The spelling of 19839857714 in words is "nineteen billion, eight hundred thirty-nine million, eight hundred fifty-seven thousand, seven hundred fourteen".