1731748045 has 4 divisors (see below), whose sum is σ = 2078097660. Its totient is φ = 1385398432.

The previous prime is 1731748013. The next prime is 1731748049. The reversal of 1731748045 is 5408471371.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5408471371 = 131 ⋅41286041.

It can be written as a sum of positive squares in 2 ways, for example, as 610435849 + 1121312196 = 24707^2 + 33486^2 .

It is a cyclic number.

It is not a de Polignac number, because 1731748045 - 2⁵ = 1731748013 is a prime.

It is a super-2 number, since 2×1731748045² = 5997902582722644050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1731747989 and 1731748007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1731748049) 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, 173174800 + ... + 173174809.

It is an arithmetic number, because the mean of its divisors is an integer number (519524415).

Almost surely, 2^1731748045 is an apocalyptic number.

It is an amenable number.

1731748045 is a deficient number, since it is larger than the sum of its proper divisors (346349615).

1731748045 is an equidigital number, since it uses as much as digits as its factorization.

1731748045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346349614.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 1731748045 is about 41614.2769371282. The cubic root of 1731748045 is about 1200.8669764849.

The spelling of 1731748045 in words is "one billion, seven hundred thirty-one million, seven hundred forty-eight thousand, forty-five".