19868137342 has 8 divisors (see below), whose sum is σ = 29877275736. Its totient is φ = 9909045432.

The previous prime is 19868137327. The next prime is 19868137343. The reversal of 19868137342 is 24373186891.

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

It is a self number, because there is not a number n which added to its sum of digits gives 19868137342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19868137343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12510628 + ... + 12512215.

It is an arithmetic number, because the mean of its divisors is an integer number (3734659467).

Almost surely, 2^19868137342 is an apocalyptic number.

19868137342 is a deficient number, since it is larger than the sum of its proper divisors (10009138394).

19868137342 is a wasteful number, since it uses less digits than its factorization.

19868137342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25023242.

The product of its digits is 1741824, while the sum is 52.

The spelling of 19868137342 in words is "nineteen billion, eight hundred sixty-eight million, one hundred thirty-seven thousand, three hundred forty-two".