19379520897 has 16 divisors (see below), whose sum is σ = 28574539968. Its totient is φ = 11584270080.

The previous prime is 19379520893. The next prime is 19379520973. The reversal of 19379520897 is 79802597391.

It is not a de Polignac number, because 19379520897 - 2² = 19379520893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19379520897.

It is not an unprimeable number, because it can be changed into a prime (19379520893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4019908 + ... + 4024725.

It is an arithmetic number, because the mean of its divisors is an integer number (1785908748).

Almost surely, 2^19379520897 is an apocalyptic number.

It is an amenable number.

19379520897 is a deficient number, since it is larger than the sum of its proper divisors (9195019071).

19379520897 is a wasteful number, since it uses less digits than its factorization.

19379520897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8044720.

The product of its (nonzero) digits is 8573040, while the sum is 60.

The spelling of 19379520897 in words is "nineteen billion, three hundred seventy-nine million, five hundred twenty thousand, eight hundred ninety-seven".