19429394475 has 24 divisors (see below), whose sum is σ = 32129787312. Its totient is φ = 10360240000.

The previous prime is 19429394459. The next prime is 19429394477. The reversal of 19429394475 is 57449392491.

It is a happy number.

It is not a de Polignac number, because 19429394475 - 2⁴ = 19429394459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19429394477) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 389029 + ... + 436121.

It is an arithmetic number, because the mean of its divisors is an integer number (1338741138).

Almost surely, 2^19429394475 is an apocalyptic number.

19429394475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19429394475 is a deficient number, since it is larger than the sum of its proper divisors (12700392837).

19429394475 is a wasteful number, since it uses less digits than its factorization.

19429394475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52607 (or 52602 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 57.

The spelling of 19429394475 in words is "nineteen billion, four hundred twenty-nine million, three hundred ninety-four thousand, four hundred seventy-five".