1720341053 has 4 divisors (see below), whose sum is σ = 1720814880. Its totient is φ = 1719867228.

The previous prime is 1720341043. The next prime is 1720341059. The reversal of 1720341053 is 3501430271.

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: 3501430271 = 2843 ⋅1231597.

It is a cyclic number.

It is not a de Polignac number, because 1720341053 - 2⁶ = 1720340989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1720341059) 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, 231425 + ... + 238742.

It is an arithmetic number, because the mean of its divisors is an integer number (430203720).

Almost surely, 2^1720341053 is an apocalyptic number.

It is an amenable number.

1720341053 is a deficient number, since it is larger than the sum of its proper divisors (473827).

1720341053 is an equidigital number, since it uses as much as digits as its factorization.

1720341053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473826.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 1720341053 is about 41476.9942618797. The cubic root of 1720341053 is about 1198.2244698080.

The spelling of 1720341053 in words is "one billion, seven hundred twenty million, three hundred forty-one thousand, fifty-three".