19147536090797 has 4 divisors (see below), whose sum is σ = 19147560486396. Its totient is φ = 19147511695200.

The previous prime is 19147536090757. The next prime is 19147536090863. The reversal of 19147536090797 is 79709063574191.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12750248421001 + 6397287669796 = 3570749^2 + 2529286^2 .

It is a cyclic number.

It is not a de Polignac number, because 19147536090797 - 2¹⁸ = 19147535828653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19147536090757) 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, 10979954 + ... + 12603747.

It is an arithmetic number, because the mean of its divisors is an integer number (4786890121599).

Almost surely, 2^{19147536090797} is an apocalyptic number.

It is an amenable number.

19147536090797 is a deficient number, since it is larger than the sum of its proper divisors (24395599).

19147536090797 is an equidigital number, since it uses as much as digits as its factorization.

19147536090797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24395598.

The product of its (nonzero) digits is 90016920, while the sum is 68.

The spelling of 19147536090797 in words is "nineteen trillion, one hundred forty-seven billion, five hundred thirty-six million, ninety thousand, seven hundred ninety-seven".