19422587105 has 4 divisors (see below), whose sum is σ = 23307104532. Its totient is φ = 15538069680.

The previous prime is 19422587089. The next prime is 19422587123. The reversal of 19422587105 is 50178522491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50178522491 = 29 ⋅1730293879.

It can be written as a sum of positive squares in 2 ways, for example, as 8756654929 + 10665932176 = 93577^2 + 103276^2 .

It is not a de Polignac number, because 19422587105 - 2⁴ = 19422587089 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1942258706 + ... + 1942258715.

It is an arithmetic number, because the mean of its divisors is an integer number (5826776133).

Almost surely, 2^19422587105 is an apocalyptic number.

It is an amenable number.

19422587105 is a deficient number, since it is larger than the sum of its proper divisors (3884517427).

19422587105 is an equidigital number, since it uses as much as digits as its factorization.

19422587105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3884517426.

The product of its (nonzero) digits is 201600, while the sum is 44.

The spelling of 19422587105 in words is "nineteen billion, four hundred twenty-two million, five hundred eighty-seven thousand, one hundred five".