1845605133133 has 4 divisors (see below), whose sum is σ = 1880427871548. Its totient is φ = 1810782394720.

The previous prime is 1845605133107. The next prime is 1845605133179. The reversal of 1845605133133 is 3313315065481.

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 979985163364 + 865619969769 = 989942^2 + 930387^2 .

It is a cyclic number.

It is not a de Polignac number, because 1845605133133 - 2²¹ = 1845603035981 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1845605133133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1845605133733) 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, 17411369128 + ... + 17411369233.

It is an arithmetic number, because the mean of its divisors is an integer number (470106967887).

Almost surely, 2^{1845605133133} is an apocalyptic number.

It is an amenable number.

1845605133133 is a deficient number, since it is larger than the sum of its proper divisors (34822738415).

1845605133133 is an equidigital number, since it uses as much as digits as its factorization.

1845605133133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34822738414.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 1845605133133 in words is "one trillion, eight hundred forty-five billion, six hundred five million, one hundred thirty-three thousand, one hundred thirty-three".