19394514375 has 20 divisors (see below), whose sum is σ = 32313850008. Its totient is φ = 10343740000.

The previous prime is 19394514371. The next prime is 19394514383. The reversal of 19394514375 is 57341549391.

It is a happy number.

It is not a de Polignac number, because 19394514375 - 2² = 19394514371 is a prime.

It is a super-2 number, since 2×19394514375² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19394514371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5169996 + ... + 5173745.

Almost surely, 2^19394514375 is an apocalyptic number.

19394514375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19394514375 is a deficient number, since it is larger than the sum of its proper divisors (12919335633).

19394514375 is an equidigital number, since it uses as much as digits as its factorization.

19394514375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10343764 (or 10343749 counting only the distinct ones).

The product of its digits is 2041200, while the sum is 51.

The spelling of 19394514375 in words is "nineteen billion, three hundred ninety-four million, five hundred fourteen thousand, three hundred seventy-five".