1943980467289 has 9 divisors (see below), whose sum is σ = 2261376386751. Its totient is φ = 1666260606360.

The previous prime is 1943980467283. The next prime is 1943980467307. The reversal of 1943980467289 is 9827640893491.

The square root of 1943980467289 is 1394267.

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

It can be written as a sum of positive squares in only one way, i.e., 1899112754889 + 44867712400 = 1378083^2 + 211820^2 .

It is not a de Polignac number, because 1943980467289 - 2¹⁷ = 1943980336217 is a prime.

It is a super-3 number, since 3×1943980467289³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1943980467283) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9660279 + ... + 9859459.

Almost surely, 2^{1943980467289} is an apocalyptic number.

1943980467289 is the 1394267-th square number.

1943980467289 is the 697134-th centered octagonal number.

It is an amenable number.

1943980467289 is a deficient number, since it is larger than the sum of its proper divisors (317395919462).

1943980467289 is an frugal number, since it uses more digits than its factorization.

1943980467289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398376 (or 199188 counting only the distinct ones).

The product of its (nonzero) digits is 188116992, while the sum is 70.

The spelling of 1943980467289 in words is "one trillion, nine hundred forty-three billion, nine hundred eighty million, four hundred sixty-seven thousand, two hundred eighty-nine".