1845288049 has 4 divisors (see below), whose sum is σ = 2013041520. Its totient is φ = 1677534580.

The previous prime is 1845288041. The next prime is 1845288089. The reversal of 1845288049 is 9408825481.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1845288049 - 2³ = 1845288041 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1845287993 and 1845288011.

It is not an unprimeable number, because it can be changed into a prime (1845288041) 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, 83876719 + ... + 83876740.

It is an arithmetic number, because the mean of its divisors is an integer number (503260380).

Almost surely, 2^1845288049 is an apocalyptic number.

It is an amenable number.

1845288049 is a deficient number, since it is larger than the sum of its proper divisors (167753471).

1845288049 is a wasteful number, since it uses less digits than its factorization.

1845288049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167753470.

The product of its (nonzero) digits is 737280, while the sum is 49.

The square root of 1845288049 is about 42956.8160947713. The cubic root of 1845288049 is about 1226.5579065891.

The spelling of 1845288049 in words is "one billion, eight hundred forty-five million, two hundred eighty-eight thousand, forty-nine".