1724672449 has 2 divisors, whose sum is σ = 1724672450. Its totient is φ = 1724672448.

The previous prime is 1724672407. The next prime is 1724672461. The reversal of 1724672449 is 9442764271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1353724849 + 370947600 = 36793^2 + 19260^2 .

It is a cyclic number.

It is not a de Polignac number, because 1724672449 - 2²¹ = 1722575297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1724672399 and 1724672408.

It is not a weakly prime, because it can be changed into another prime (1724672489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 862336224 + 862336225.

It is an arithmetic number, because the mean of its divisors is an integer number (862336225).

Almost surely, 2^1724672449 is an apocalyptic number.

It is an amenable number.

1724672449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1724672449 is an equidigital number, since it uses as much as digits as its factorization.

1724672449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 46.

The square root of 1724672449 is about 41529.1758767255. The cubic root of 1724672449 is about 1199.2292386099.

The spelling of 1724672449 in words is "one billion, seven hundred twenty-four million, six hundred seventy-two thousand, four hundred forty-nine".