19750384117 has 8 divisors (see below), whose sum is σ = 20928418200. Its totient is φ = 18574155264.

The previous prime is 19750384109. The next prime is 19750384139. The reversal of 19750384117 is 71148305791.

It can be written as a sum of positive squares in 4 ways, for example, as 5879669041 + 13870715076 = 76679^2 + 117774^2 .

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 19750384117 - 2³ = 19750384109 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 (19750384187) 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, 428742 + ... + 472567.

It is an arithmetic number, because the mean of its divisors is an integer number (2616052275).

Almost surely, 2^19750384117 is an apocalyptic number.

19750384117 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

19750384117 is a deficient number, since it is larger than the sum of its proper divisors (1178034083).

19750384117 is a wasteful number, since it uses less digits than its factorization.

19750384117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902615.

The product of its (nonzero) digits is 211680, while the sum is 46.

The spelling of 19750384117 in words is "nineteen billion, seven hundred fifty million, three hundred eighty-four thousand, one hundred seventeen".