19642398075 has 144 divisors (see below), whose sum is σ = 38409372000. Its totient is φ = 9839750400.

The previous prime is 19642398073. The next prime is 19642398101. The reversal of 19642398075 is 57089324691.

It is not a de Polignac number, because 19642398075 - 2¹ = 19642398073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19642398073) 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 143 ways as a sum of consecutive naturals, for example, 36307305 + ... + 36307845.

It is an arithmetic number, because the mean of its divisors is an integer number (266731750).

It is a 2-persistent number, because it is pandigital, and so is 2⋅19642398075 = 39284796150, but 3⋅19642398075 = 58927194225 is not.

Almost surely, 2^19642398075 is an apocalyptic number.

19642398075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19642398075 is a deficient number, since it is larger than the sum of its proper divisors (18766973925).

19642398075 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (19642398074) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (747).

19642398075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747 (or 717 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 19642398075 in words is "nineteen billion, six hundred forty-two million, three hundred ninety-eight thousand, seventy-five".