1609090971841 has 4 divisors (see below), whose sum is σ = 1609444700500. Its totient is φ = 1608737243184.

The previous prime is 1609090971821. The next prime is 1609090971857. The reversal of 1609090971841 is 1481790909061.

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 1465225516225 + 143865455616 = 1210465^2 + 379296^2 .

It is a cyclic number.

It is not a de Polignac number, because 1609090971841 - 2⁵ = 1609090971809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1609090971821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176857506 + ... + 176866603.

It is an arithmetic number, because the mean of its divisors is an integer number (402361175125).

Almost surely, 2^{1609090971841} is an apocalyptic number.

It is an amenable number.

1609090971841 is a deficient number, since it is larger than the sum of its proper divisors (353728659).

1609090971841 is an equidigital number, since it uses as much as digits as its factorization.

1609090971841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353728658.

The product of its (nonzero) digits is 979776, while the sum is 55.

The spelling of 1609090971841 in words is "one trillion, six hundred nine billion, ninety million, nine hundred seventy-one thousand, eight hundred forty-one".