19742552219 has 8 divisors (see below), whose sum is σ = 21350172480. Its totient is φ = 18147640896.

The previous prime is 19742552201. The next prime is 19742552231. The reversal of 19742552219 is 91225524791.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 19742552219 - 2¹² = 19742548123 is a prime.

It is a super-2 number, since 2×19742552219² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19742552279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3174002 + ... + 3180215.

It is an arithmetic number, because the mean of its divisors is an integer number (2668771560).

Almost surely, 2^19742552219 is an apocalyptic number.

19742552219 is a deficient number, since it is larger than the sum of its proper divisors (1607620261).

19742552219 is a wasteful number, since it uses less digits than its factorization.

19742552219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6354469.

The product of its digits is 453600, while the sum is 47.

The spelling of 19742552219 in words is "nineteen billion, seven hundred forty-two million, five hundred fifty-two thousand, two hundred nineteen".