19120296081 has 4 divisors (see below), whose sum is σ = 25493728112. Its totient is φ = 12746864052.

The previous prime is 19120296077. The next prime is 19120296089. The reversal of 19120296081 is 18069202191.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18069202191 = 3 ⋅6023067397.

It is not a de Polignac number, because 19120296081 - 2² = 19120296077 is a prime.

It is a super-2 number, since 2×19120296081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19120296089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3186716011 + ... + 3186716016.

It is an arithmetic number, because the mean of its divisors is an integer number (6373432028).

Almost surely, 2^19120296081 is an apocalyptic number.

It is an amenable number.

19120296081 is a deficient number, since it is larger than the sum of its proper divisors (6373432031).

19120296081 is an equidigital number, since it uses as much as digits as its factorization.

19120296081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6373432030.

The product of its (nonzero) digits is 15552, while the sum is 39.

The spelling of 19120296081 in words is "nineteen billion, one hundred twenty million, two hundred ninety-six thousand, eighty-one".