1730491489 has 4 divisors (see below), whose sum is σ = 1832285124. Its totient is φ = 1628697856.

The previous prime is 1730491471. The next prime is 1730491531. The reversal of 1730491489 is 9841940371.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9841940371 = 4759 ⋅2068069.

It can be written as a sum of positive squares in 2 ways, for example, as 1306461025 + 424030464 = 36145^2 + 20592^2 .

It is a cyclic number.

It is not a de Polignac number, because 1730491489 - 2¹³ = 1730483297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1730491409) 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, 50896792 + ... + 50896825.

It is an arithmetic number, because the mean of its divisors is an integer number (458071281).

Almost surely, 2^1730491489 is an apocalyptic number.

It is an amenable number.

1730491489 is a deficient number, since it is larger than the sum of its proper divisors (101793635).

1730491489 is a wasteful number, since it uses less digits than its factorization.

1730491489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101793634.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 1730491489 is about 41599.1765423307. The cubic root of 1730491489 is about 1200.5764566020.

The spelling of 1730491489 in words is "one billion, seven hundred thirty million, four hundred ninety-one thousand, four hundred eighty-nine".