19193382742 has 4 divisors (see below), whose sum is σ = 28790074116. Its totient is φ = 9596691370.

The previous prime is 19193382737. The next prime is 19193382781. The reversal of 19193382742 is 24728339191.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24728339191 = 31 ⋅797688361.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4798345684 + ... + 4798345687.

It is an arithmetic number, because the mean of its divisors is an integer number (7197518529).

Almost surely, 2^19193382742 is an apocalyptic number.

19193382742 is a deficient number, since it is larger than the sum of its proper divisors (9596691374).

19193382742 is an equidigital number, since it uses as much as digits as its factorization.

19193382742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9596691373.

The product of its digits is 653184, while the sum is 49.

The spelling of 19193382742 in words is "nineteen billion, one hundred ninety-three million, three hundred eighty-two thousand, seven hundred forty-two".