1797122422 has 4 divisors (see below), whose sum is σ = 2695683636. Its totient is φ = 898561210.

The previous prime is 1797122413. The next prime is 1797122497. The reversal of 1797122422 is 2242217971.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2242217971 = 7 ⋅320316853.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 449280604 + ... + 449280607.

It is an arithmetic number, because the mean of its divisors is an integer number (673920909).

Almost surely, 2^1797122422 is an apocalyptic number.

1797122422 is a deficient number, since it is larger than the sum of its proper divisors (898561214).

1797122422 is an equidigital number, since it uses as much as digits as its factorization.

1797122422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898561213.

The product of its digits is 28224, while the sum is 37.

The square root of 1797122422 is about 42392.4807247700. The cubic root of 1797122422 is about 1215.7918307628.

The spelling of 1797122422 in words is "one billion, seven hundred ninety-seven million, one hundred twenty-two thousand, four hundred twenty-two".