1791193049 has 8 divisors (see below), whose sum is σ = 1906387560. Its totient is φ = 1677090816.

The previous prime is 1791193039. The next prime is 1791193073. The reversal of 1791193049 is 9403911971.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 152967424 + 1638225625 = 12368^2 + 40475^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1791193049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1791193039) 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, 269684 + ... + 276245.

It is an arithmetic number, because the mean of its divisors is an integer number (238298445).

Almost surely, 2^1791193049 is an apocalyptic number.

It is an amenable number.

1791193049 is a deficient number, since it is larger than the sum of its proper divisors (115194511).

1791193049 is a wasteful number, since it uses less digits than its factorization.

1791193049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546139.

The product of its (nonzero) digits is 61236, while the sum is 44.

The square root of 1791193049 is about 42322.4886910021. The cubic root of 1791193049 is about 1214.4532415473.

The spelling of 1791193049 in words is "one billion, seven hundred ninety-one million, one hundred ninety-three thousand, forty-nine".