1845244640 has 24 divisors (see below), whose sum is σ = 4359390840. Its totient is φ = 738097792.

The previous prime is 1845244627. The next prime is 1845244657. The reversal of 1845244640 is 464425481.

It is a junction number, because it is equal to n+sod(n) for n = 1845244594 and 1845244603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5766230 + ... + 5766549.

It is an arithmetic number, because the mean of its divisors is an integer number (181641285).

Almost surely, 2^1845244640 is an apocalyptic number.

1845244640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1845244640 is an abundant number, since it is smaller than the sum of its proper divisors (2514146200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1845244640 is a wasteful number, since it uses less digits than its factorization.

1845244640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11532794 (or 11532786 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 38.

The square root of 1845244640 is about 42956.3108285616. The cubic root of 1845244640 is about 1226.5482885659.

The spelling of 1845244640 in words is "one billion, eight hundred forty-five million, two hundred forty-four thousand, six hundred forty".