1089890873273 has 4 divisors (see below), whose sum is σ = 1110454852068. Its totient is φ = 1069326894480.

The previous prime is 1089890873251. The next prime is 1089890873287. The reversal of 1089890873273 is 3723780989801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 620271230329 + 469619642944 = 787573^2 + 685288^2 .

It is a cyclic number.

It is not a de Polignac number, because 1089890873273 - 2¹⁸ = 1089890611129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1089890873213) 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, 10281989318 + ... + 10281989423.

It is an arithmetic number, because the mean of its divisors is an integer number (277613713017).

Almost surely, 2^{1089890873273} is an apocalyptic number.

It is an amenable number.

1089890873273 is a deficient number, since it is larger than the sum of its proper divisors (20563978795).

1089890873273 is an equidigital number, since it uses as much as digits as its factorization.

1089890873273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20563978794.

The product of its (nonzero) digits is 36578304, while the sum is 65.

The spelling of 1089890873273 in words is "one trillion, eighty-nine billion, eight hundred ninety million, eight hundred seventy-three thousand, two hundred seventy-three".