19578297052 has 12 divisors (see below), whose sum is σ = 34283674656. Its totient is φ = 9782961440.

The previous prime is 19578297049. The next prime is 19578297059. The reversal of 19578297052 is 25079287591.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 19578296984 and 19578297002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19578297059) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1539649 + ... + 1552312.

It is an arithmetic number, because the mean of its divisors is an integer number (2856972888).

Almost surely, 2^19578297052 is an apocalyptic number.

It is an amenable number.

19578297052 is a deficient number, since it is larger than the sum of its proper divisors (14705377604).

19578297052 is a wasteful number, since it uses less digits than its factorization.

19578297052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3093548 (or 3093546 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 55.

The spelling of 19578297052 in words is "nineteen billion, five hundred seventy-eight million, two hundred ninety-seven thousand, fifty-two".