1791122441 has 4 divisors (see below), whose sum is σ = 1796112000. Its totient is φ = 1786132884.

The previous prime is 1791122423. The next prime is 1791122449. The reversal of 1791122441 is 1442211971.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1442211971 = 17903 ⋅80557.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1791122441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1791122398 and 1791122407.

It is not an unprimeable number, because it can be changed into a prime (1791122449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2494241 + ... + 2494958.

It is an arithmetic number, because the mean of its divisors is an integer number (449028000).

Almost surely, 2^1791122441 is an apocalyptic number.

It is an amenable number.

1791122441 is a deficient number, since it is larger than the sum of its proper divisors (4989559).

1791122441 is an equidigital number, since it uses as much as digits as its factorization.

1791122441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4989558.

The product of its digits is 4032, while the sum is 32.

The square root of 1791122441 is about 42321.6545163348. The cubic root of 1791122441 is about 1214.4372836096.

The spelling of 1791122441 in words is "one billion, seven hundred ninety-one million, one hundred twenty-two thousand, four hundred forty-one".