1721752036 has 9 divisors (see below), whose sum is σ = 3013211299. Its totient is φ = 860834524.

The previous prime is 1721752033. The next prime is 1721752049. The reversal of 1721752036 is 6302571271.

The square root of 1721752036 is 41494.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1721751992 and 1721752010.

It is not an unprimeable number, because it can be changed into a prime (1721752033) 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 2 ways as a sum of consecutive naturals, for example, 72615 + ... + 93361.

Almost surely, 2^1721752036 is an apocalyptic number.

1721752036 is the 41494-th square number.

It is an amenable number.

1721752036 is a deficient number, since it is larger than the sum of its proper divisors (1291459263).

1721752036 is an frugal number, since it uses more digits than its factorization.

1721752036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41498 (or 20749 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 34.

The cubic root of 1721752036 is about 1198.5519654030.

The spelling of 1721752036 in words is "one billion, seven hundred twenty-one million, seven hundred fifty-two thousand, thirty-six".