1748661489 has 27 divisors (see below), whose sum is σ = 2584226827. Its totient is φ = 1139429616.

The previous prime is 1748661479. The next prime is 1748661493. The reversal of 1748661489 is 9841668471.

The square root of 1748661489 is 41817.

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

1748661489 is a `hidden beast` number, since 17 + 4 + 8 + 6 + 614 + 8 + 9 = 666.

1748661489 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1260605025 + 488056464 = 35505^2 + 22092^2 .

It is not a de Polignac number, because 1748661489 - 2¹¹ = 1748659441 is a prime.

It is a super-2 number, since 2×1748661489² = 6115634006223394242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1748661449) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 6648772 + ... + 6649034.

Almost surely, 2^1748661489 is an apocalyptic number.

1748661489 is the 41817-th square number.

1748661489 is the 20909-th centered octagonal number.

It is an amenable number.

1748661489 is a deficient number, since it is larger than the sum of its proper divisors (835565338).

1748661489 is an frugal number, since it uses more digits than its factorization.

1748661489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638 (or 319 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The cubic root of 1748661489 is about 1204.7638154433.

The spelling of 1748661489 in words is "one billion, seven hundred forty-eight million, six hundred sixty-one thousand, four hundred eighty-nine".