19352564161 has 12 divisors (see below), whose sum is σ = 22568894868. Its totient is φ = 16546112352.

The previous prime is 19352564137. The next prime is 19352564167. The reversal of 19352564161 is 16146525391.

It can be written as a sum of positive squares in 2 ways, for example, as 9107075761 + 10245488400 = 95431^2 + 101220^2 .

It is not a de Polignac number, because 19352564161 - 2²⁹ = 18815693249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19352564167) 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 11 ways as a sum of consecutive naturals, for example, 477966 + ... + 516871.

It is an arithmetic number, because the mean of its divisors is an integer number (1880741239).

Almost surely, 2^19352564161 is an apocalyptic number.

It is an amenable number.

19352564161 is a deficient number, since it is larger than the sum of its proper divisors (3216330707).

19352564161 is an equidigital number, since it uses as much as digits as its factorization.

19352564161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995248 (or 995241 counting only the distinct ones).

The product of its digits is 194400, while the sum is 43.

The spelling of 19352564161 in words is "nineteen billion, three hundred fifty-two million, five hundred sixty-four thousand, one hundred sixty-one".