1727827949 has 2 divisors, whose sum is σ = 1727827950. Its totient is φ = 1727827948.

The previous prime is 1727827943. The next prime is 1727827973. The reversal of 1727827949 is 9497287271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1724740900 + 3087049 = 41530^2 + 1757^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1727827949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1727827894 and 1727827903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1727827943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 863913974 + 863913975.

It is an arithmetic number, because the mean of its divisors is an integer number (863913975).

Almost surely, 2^1727827949 is an apocalyptic number.

It is an amenable number.

1727827949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1727827949 is an equidigital number, since it uses as much as digits as its factorization.

1727827949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3556224, while the sum is 56.

The square root of 1727827949 is about 41567.1498782392. The cubic root of 1727827949 is about 1199.9601720578.

The spelling of 1727827949 in words is "one billion, seven hundred twenty-seven million, eight hundred twenty-seven thousand, nine hundred forty-nine".