1673849 has 2 divisors, whose sum is σ = 1673850. Its totient is φ = 1673848.

The previous prime is 1673839. The next prime is 1673857. The reversal of 1673849 is 9483761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1517824 + 156025 = 1232^2 + 395^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1673849 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1673809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836924 + 836925.

It is an arithmetic number, because the mean of its divisors is an integer number (836925).

2^1673849 is an apocalyptic number.

It is an amenable number.

1673849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1673849 is an equidigital number, since it uses as much as digits as its factorization.

1673849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 38.

The square root of 1673849 is about 1293.7731640438. The cubic root of 1673849 is about 118.7331780419.

The spelling of 1673849 in words is "one million, six hundred seventy-three thousand, eight hundred forty-nine".