1740393449 has 4 divisors (see below), whose sum is σ = 1740910080. Its totient is φ = 1739876820.

The previous prime is 1740393437. The next prime is 1740393491. The reversal of 1740393449 is 9443930471.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9443930471 = 251 ⋅37625221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1740393449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1740398449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253229 + ... + 260010.

It is an arithmetic number, because the mean of its divisors is an integer number (435227520).

Almost surely, 2^1740393449 is an apocalyptic number.

It is an amenable number.

1740393449 is a deficient number, since it is larger than the sum of its proper divisors (516631).

1740393449 is an equidigital number, since it uses as much as digits as its factorization.

1740393449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516630.

The product of its (nonzero) digits is 326592, while the sum is 44.

The square root of 1740393449 is about 41718.0230715694. The cubic root of 1740393449 is about 1202.8620225310.

The spelling of 1740393449 in words is "one billion, seven hundred forty million, three hundred ninety-three thousand, four hundred forty-nine".