1791934849 has 4 divisors (see below), whose sum is σ = 1817173440. Its totient is φ = 1766696260.

The previous prime is 1791934817. The next prime is 1791934871. The reversal of 1791934849 is 9484391971.

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.

It is a cyclic number.

It is not a de Polignac number, because 1791934849 - 2⁵ = 1791934817 is a prime.

It is a super-2 number, since 2×1791934849² = 6422061006121305602, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1791934849.

It is not an unprimeable number, because it can be changed into a prime (1791934049) 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, 12619189 + ... + 12619330.

It is an arithmetic number, because the mean of its divisors is an integer number (454293360).

Almost surely, 2^1791934849 is an apocalyptic number.

It is an amenable number.

1791934849 is a deficient number, since it is larger than the sum of its proper divisors (25238591).

1791934849 is an equidigital number, since it uses as much as digits as its factorization.

1791934849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25238590.

The product of its digits is 1959552, while the sum is 55.

The square root of 1791934849 is about 42331.2514461834. The cubic root of 1791934849 is about 1214.6208685713.

The spelling of 1791934849 in words is "one billion, seven hundred ninety-one million, nine hundred thirty-four thousand, eight hundred forty-nine".