19013437439 has 16 divisors (see below), whose sum is σ = 20070167040. Its totient is φ = 17976641760.

The previous prime is 19013437411. The next prime is 19013437441. The reversal of 19013437439 is 93473431091.

It is a de Polignac number, because none of the positive numbers 2^k-19013437439 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 19013437439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19013437489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1126142 + ... + 1142900.

It is an arithmetic number, because the mean of its divisors is an integer number (1254385440).

Almost surely, 2^19013437439 is an apocalyptic number.

19013437439 is a deficient number, since it is larger than the sum of its proper divisors (1056729601).

19013437439 is a wasteful number, since it uses less digits than its factorization.

19013437439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17350.

The product of its (nonzero) digits is 244944, while the sum is 44.

The spelling of 19013437439 in words is "nineteen billion, thirteen million, four hundred thirty-seven thousand, four hundred thirty-nine".