19349039842 has 16 divisors (see below), whose sum is σ = 33328490400. Its totient is φ = 8332122240.

The previous prime is 19349039839. The next prime is 19349039863. The reversal of 19349039842 is 24893094391.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 19349039842.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23144367 + ... + 23145202.

It is an arithmetic number, because the mean of its divisors is an integer number (2083030650).

Almost surely, 2^19349039842 is an apocalyptic number.

19349039842 is a deficient number, since it is larger than the sum of its proper divisors (13979450558).

19349039842 is a wasteful number, since it uses less digits than its factorization.

19349039842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46289601.

The product of its (nonzero) digits is 1679616, while the sum is 52.

It can be divided in two parts, 193490 and 39842, that added together give a palindrome (233332).

The spelling of 19349039842 in words is "nineteen billion, three hundred forty-nine million, thirty-nine thousand, eight hundred forty-two".