19394394749075 has 24 divisors (see below), whose sum is σ = 24771298987776. Its totient is φ = 15054327540000.

The previous prime is 19394394749047. The next prime is 19394394749101. The reversal of 19394394749075 is 57094749349391.

It is not a de Polignac number, because 19394394749075 - 2²² = 19394390554771 is a prime.

It is a super-2 number, since 2×19394394749075² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19394394748993 and 19394394749011.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 59577071 + ... + 59901720.

It is an arithmetic number, because the mean of its divisors is an integer number (1032137457824).

Almost surely, 2^{19394394749075} is an apocalyptic number.

19394394749075 is a deficient number, since it is larger than the sum of its proper divisors (5376904238701).

19394394749075 is a wasteful number, since it uses less digits than its factorization.

19394394749075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119478995 (or 119478990 counting only the distinct ones).

The product of its (nonzero) digits is 925888320, while the sum is 74.

The spelling of 19394394749075 in words is "nineteen trillion, three hundred ninety-four billion, three hundred ninety-four million, seven hundred forty-nine thousand, seventy-five".