19838423757 has 8 divisors (see below), whose sum is σ = 26599004640. Its totient is φ = 13151729360.

The previous prime is 19838423741. The next prime is 19838423777. The reversal of 19838423757 is 75732483891.

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 19838423757 - 2⁴ = 19838423741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19838423697 and 19838423706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19838423777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18470994 + ... + 18472067.

It is an arithmetic number, because the mean of its divisors is an integer number (3324875580).

Almost surely, 2^19838423757 is an apocalyptic number.

It is an amenable number.

19838423757 is a deficient number, since it is larger than the sum of its proper divisors (6760580883).

19838423757 is a wasteful number, since it uses less digits than its factorization.

19838423757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36943243.

The product of its digits is 10160640, while the sum is 57.

The spelling of 19838423757 in words is "nineteen billion, eight hundred thirty-eight million, four hundred twenty-three thousand, seven hundred fifty-seven".