1784664049 has 4 divisors (see below), whose sum is σ = 2039616064. Its totient is φ = 1529712036.

The previous prime is 1784663989. The next prime is 1784664067. The reversal of 1784664049 is 9404664871.

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 1784664049 - 2⁷ = 1784663921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1784663993 and 1784664011.

It is not an unprimeable number, because it can be changed into a prime (1784664149) 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, 127475997 + ... + 127476010.

It is an arithmetic number, because the mean of its divisors is an integer number (509904016).

Almost surely, 2^1784664049 is an apocalyptic number.

It is an amenable number.

1784664049 is a deficient number, since it is larger than the sum of its proper divisors (254952015).

1784664049 is an equidigital number, since it uses as much as digits as its factorization.

1784664049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254952014.

The product of its (nonzero) digits is 1161216, while the sum is 49.

The square root of 1784664049 is about 42245.2843403853. The cubic root of 1784664049 is about 1212.9758614550.

The spelling of 1784664049 in words is "one billion, seven hundred eighty-four million, six hundred sixty-four thousand, forty-nine".