19808046245 has 8 divisors (see below), whose sum is σ = 25598090616. Its totient is φ = 14627480256.

The previous prime is 19808046173. The next prime is 19808046259. The reversal of 19808046245 is 54264080891.

It can be written as a sum of positive squares in 4 ways, for example, as 112169281 + 19695876964 = 10591^2 + 140342^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 19808046245 - 2²² = 19803851941 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19808046245.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152369522 + ... + 152369651.

It is an arithmetic number, because the mean of its divisors is an integer number (3199761327).

Almost surely, 2^19808046245 is an apocalyptic number.

It is an amenable number.

19808046245 is a deficient number, since it is larger than the sum of its proper divisors (5790044371).

19808046245 is a wasteful number, since it uses less digits than its factorization.

19808046245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304739191.

The product of its (nonzero) digits is 552960, while the sum is 47.

The spelling of 19808046245 in words is "nineteen billion, eight hundred eight million, forty-six thousand, two hundred forty-five".