1972901817089 has 8 divisors (see below), whose sum is σ = 2332494759360. Its totient is φ = 1632746331216.

The previous prime is 1972901817049. The next prime is 1972901817143. The reversal of 1972901817089 is 9807181092791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1972901817089 - 2²⁰ = 1972900768513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1972901817049) 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 7 ways as a sum of consecutive naturals, for example, 4859363879 + ... + 4859364284.

It is an arithmetic number, because the mean of its divisors is an integer number (291561844920).

Almost surely, 2^{1972901817089} is an apocalyptic number.

It is an amenable number.

1972901817089 is a deficient number, since it is larger than the sum of its proper divisors (359592942271).

1972901817089 is an equidigital number, since it uses as much as digits as its factorization.

1972901817089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9718728199.

The product of its (nonzero) digits is 4572288, while the sum is 62.

The spelling of 1972901817089 in words is "one trillion, nine hundred seventy-two billion, nine hundred one million, eight hundred seventeen thousand, eighty-nine".