19031145047 has 32 divisors (see below), whose sum is σ = 21274099200. Its totient is φ = 16941564288.

The previous prime is 19031145043. The next prime is 19031145061. The reversal of 19031145047 is 74054113091.

It is a cyclic number.

It is not a de Polignac number, because 19031145047 - 2² = 19031145043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19031144998 and 19031145016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19031145043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14902373 + ... + 14903649.

It is an arithmetic number, because the mean of its divisors is an integer number (664815600).

Almost surely, 2^19031145047 is an apocalyptic number.

19031145047 is a deficient number, since it is larger than the sum of its proper divisors (2242954153).

19031145047 is a wasteful number, since it uses less digits than its factorization.

19031145047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1895.

The product of its (nonzero) digits is 15120, while the sum is 35.

The spelling of 19031145047 in words is "nineteen billion, thirty-one million, one hundred forty-five thousand, forty-seven".