19485078243 has 8 divisors (see below), whose sum is σ = 25981670400. Its totient is φ = 12989269128.

The previous prime is 19485078233. The next prime is 19485078253. The reversal of 19485078243 is 34287058491.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (19485078233) and next prime (19485078253).

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

It is not a de Polignac number, because 19485078243 - 2¹⁰ = 19485077219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19485078233) 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, 135003 + ... + 239156.

It is an arithmetic number, because the mean of its divisors is an integer number (3247708800).

Almost surely, 2^19485078243 is an apocalyptic number.

19485078243 is a deficient number, since it is larger than the sum of its proper divisors (6496592157).

19485078243 is a wasteful number, since it uses less digits than its factorization.

19485078243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391521.

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 19485078243 in words is "nineteen billion, four hundred eighty-five million, seventy-eight thousand, two hundred forty-three".