19549122445 has 8 divisors (see below), whose sum is σ = 23464556280. Its totient is φ = 15635558400.

The previous prime is 19549122433. The next prime is 19549122473. The reversal of 19549122445 is 54422194591.

It can be written as a sum of positive squares in 4 ways, for example, as 891201609 + 18657920836 = 29853^2 + 136594^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19549122445 - 2⁷ = 19549122317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19549122395 and 19549122404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444340 + ... + 486349.

It is an arithmetic number, because the mean of its divisors is an integer number (2933069535).

Almost surely, 2^19549122445 is an apocalyptic number.

It is an amenable number.

19549122445 is a deficient number, since it is larger than the sum of its proper divisors (3915433835).

19549122445 is an equidigital number, since it uses as much as digits as its factorization.

19549122445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934895.

The product of its digits is 518400, while the sum is 46.

The spelling of 19549122445 in words is "nineteen billion, five hundred forty-nine million, one hundred twenty-two thousand, four hundred forty-five".