19243434242 has 16 divisors (see below), whose sum is σ = 31158786240. Its totient is φ = 8886022992.

The previous prime is 19243434193. The next prime is 19243434253. The reversal of 19243434242 is 24243434291.

It is a happy number.

It is a super-2 number, since 2×19243434242² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19243434196 and 19243434205.

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 7 ways as a sum of consecutive naturals, for example, 7211348 + ... + 7214015.

It is an arithmetic number, because the mean of its divisors is an integer number (1947424140).

Almost surely, 2^19243434242 is an apocalyptic number.

19243434242 is a deficient number, since it is larger than the sum of its proper divisors (11915351998).

19243434242 is a wasteful number, since it uses less digits than its factorization.

19243434242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14425417.

The product of its digits is 165888, while the sum is 38.

The spelling of 19243434242 in words is "nineteen billion, two hundred forty-three million, four hundred thirty-four thousand, two hundred forty-two".