19046872349 has 8 divisors (see below), whose sum is σ = 19367744760. Its totient is φ = 18726278400.

The previous prime is 19046872343. The next prime is 19046872399. The reversal of 19046872349 is 94327864091.

It can be written as a sum of positive squares in 4 ways, for example, as 53071225 + 18993801124 = 7285^2 + 137818^2 .

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 19046872349 - 2⁸ = 19046872093 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 19046872349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19046872343) by changing a digit.

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, 70697 + ... + 207585.

It is an arithmetic number, because the mean of its divisors is an integer number (2420968095).

Almost surely, 2^19046872349 is an apocalyptic number.

It is an amenable number.

19046872349 is a deficient number, since it is larger than the sum of its proper divisors (320872411).

19046872349 is a wasteful number, since it uses less digits than its factorization.

19046872349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139231.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 19046872349 in words is "nineteen billion, forty-six million, eight hundred seventy-two thousand, three hundred forty-nine".