19080253897 has 4 divisors (see below), whose sum is σ = 19099904976. Its totient is φ = 19060602820.

The previous prime is 19080253889. The next prime is 19080253931. The reversal of 19080253897 is 79835208091.

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: 79835208091 = 83 ⋅961869977.

It is a cyclic number.

It is not a de Polignac number, because 19080253897 - 2³ = 19080253889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19080253597) 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, 9824083 + ... + 9826024.

It is an arithmetic number, because the mean of its divisors is an integer number (4774976244).

Almost surely, 2^19080253897 is an apocalyptic number.

It is an amenable number.

19080253897 is a deficient number, since it is larger than the sum of its proper divisors (19651079).

19080253897 is an equidigital number, since it uses as much as digits as its factorization.

19080253897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19651078.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The spelling of 19080253897 in words is "nineteen billion, eighty million, two hundred fifty-three thousand, eight hundred ninety-seven".