1845311485 has 4 divisors (see below), whose sum is σ = 2214373788. Its totient is φ = 1476249184.

The previous prime is 1845311449. The next prime is 1845311539. The reversal of 1845311485 is 5841135481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5841135481 = 163 ⋅35835187.

It can be written as a sum of positive squares in 2 ways, for example, as 302864409 + 1542447076 = 17403^2 + 39274^2 .

It is a cyclic number.

It is not a de Polignac number, because 1845311485 - 2¹¹ = 1845309437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184531144 + ... + 184531153.

It is an arithmetic number, because the mean of its divisors is an integer number (553593447).

Almost surely, 2^1845311485 is an apocalyptic number.

It is an amenable number.

1845311485 is a deficient number, since it is larger than the sum of its proper divisors (369062303).

1845311485 is an equidigital number, since it uses as much as digits as its factorization.

1845311485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369062302.

The product of its digits is 76800, while the sum is 40.

The square root of 1845311485 is about 42957.0888794853. The cubic root of 1845311485 is about 1226.5630991821.

The spelling of 1845311485 in words is "one billion, eight hundred forty-five million, three hundred eleven thousand, four hundred eighty-five".