19278411139 has 16 divisors (see below), whose sum is σ = 20832063840. Its totient is φ = 17734970880.

The previous prime is 19278411137. The next prime is 19278411157. The reversal of 19278411139 is 93111487291.

It is a cyclic number.

It is not a de Polignac number, because 19278411139 - 2¹ = 19278411137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19278411137) 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 15 ways as a sum of consecutive naturals, for example, 5827924 + ... + 5831230.

It is an arithmetic number, because the mean of its divisors is an integer number (1302003990).

Almost surely, 2^19278411139 is an apocalyptic number.

19278411139 is a deficient number, since it is larger than the sum of its proper divisors (1553652701).

19278411139 is a wasteful number, since it uses less digits than its factorization.

19278411139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4710.

The product of its digits is 108864, while the sum is 46.

The spelling of 19278411139 in words is "nineteen billion, two hundred seventy-eight million, four hundred eleven thousand, one hundred thirty-nine".