19434098401 has 4 divisors (see below), whose sum is σ = 19622779072. Its totient is φ = 19245417732.

The previous prime is 19434098381. The next prime is 19434098407. The reversal of 19434098401 is 10489043491.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10489043491 = 277 ⋅37866583.

It is a cyclic number.

It is not a de Polignac number, because 19434098401 - 2⁷ = 19434098273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19434098407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94340181 + ... + 94340386.

It is an arithmetic number, because the mean of its divisors is an integer number (4905694768).

Almost surely, 2^19434098401 is an apocalyptic number.

It is an amenable number.

19434098401 is a deficient number, since it is larger than the sum of its proper divisors (188680671).

19434098401 is a wasteful number, since it uses less digits than its factorization.

19434098401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188680670.

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 19434098401 in words is "nineteen billion, four hundred thirty-four million, ninety-eight thousand, four hundred one".