19408729096 has 8 divisors (see below), whose sum is σ = 36391367070. Its totient is φ = 9704364544.

The previous prime is 19408729091. The next prime is 19408729103. The reversal of 19408729096 is 69092780491.

It can be written as a sum of positive squares in only one way, i.e., 18910100196 + 498628900 = 137514^2 + 22330^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (19408729091) 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 as a sum of consecutive naturals, namely, 1213045561 + ... + 1213045576.

Almost surely, 2^19408729096 is an apocalyptic number.

It is an amenable number.

19408729096 is a deficient number, since it is larger than the sum of its proper divisors (16982637974).

19408729096 is a wasteful number, since it uses less digits than its factorization.

19408729096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426091143 (or 2426091139 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 55.

The spelling of 19408729096 in words is "nineteen billion, four hundred eight million, seven hundred twenty-nine thousand, ninety-six".