1845087289345 has 4 divisors (see below), whose sum is σ = 2214104747220. Its totient is φ = 1476069831472.

The previous prime is 1845087289337. The next prime is 1845087289349. The reversal of 1845087289345 is 5439827805481.

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 227245750209 + 1617841539136 = 476703^2 + 1271944^2 .

It is a cyclic number.

It is not a de Polignac number, because 1845087289345 - 2³ = 1845087289337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1845087289349) 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, 184508728930 + ... + 184508728939.

It is an arithmetic number, because the mean of its divisors is an integer number (553526186805).

Almost surely, 2^{1845087289345} is an apocalyptic number.

It is an amenable number.

1845087289345 is a deficient number, since it is larger than the sum of its proper divisors (369017457875).

1845087289345 is an equidigital number, since it uses as much as digits as its factorization.

1845087289345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369017457874.

The product of its (nonzero) digits is 77414400, while the sum is 64.

The spelling of 1845087289345 in words is "one trillion, eight hundred forty-five billion, eighty-seven million, two hundred eighty-nine thousand, three hundred forty-five".