19231968242 has 8 divisors (see below), whose sum is σ = 28865775600. Its totient is φ = 9610043044.

The previous prime is 19231968221. The next prime is 19231968253. The reversal of 19231968242 is 24286913291.

It is a happy number.

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

It is a super-2 number, since 2×19231968242² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2966492 + ... + 2972967.

It is an arithmetic number, because the mean of its divisors is an integer number (3608221950).

Almost surely, 2^19231968242 is an apocalyptic number.

19231968242 is a deficient number, since it is larger than the sum of its proper divisors (9633807358).

19231968242 is a wasteful number, since it uses less digits than its factorization.

19231968242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5941080.

The product of its digits is 373248, while the sum is 47.

The spelling of 19231968242 in words is "nineteen billion, two hundred thirty-one million, nine hundred sixty-eight thousand, two hundred forty-two".