19926405119 has 4 divisors (see below), whose sum is σ = 20253067560. Its totient is φ = 19599742680.

The previous prime is 19926405113. The next prime is 19926405131. The reversal of 19926405119 is 91150462991.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19926405119 - 2¹⁶ = 19926339583 is a prime.

It is a super-2 number, since 2×19926405119² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19926405113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163331129 + ... + 163331250.

It is an arithmetic number, because the mean of its divisors is an integer number (5063266890).

Almost surely, 2^19926405119 is an apocalyptic number.

19926405119 is a deficient number, since it is larger than the sum of its proper divisors (326662441).

19926405119 is an equidigital number, since it uses as much as digits as its factorization.

19926405119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326662440.

The product of its (nonzero) digits is 174960, while the sum is 47.

The spelling of 19926405119 in words is "nineteen billion, nine hundred twenty-six million, four hundred five thousand, one hundred nineteen".