1845240400 has 30 divisors (see below), whose sum is σ = 4433191022. Its totient is φ = 738096000.

The previous prime is 1845240377. The next prime is 1845240403. The reversal of 1845240400 is 40425481.

It can be written as a sum of positive squares in 3 ways, for example, as 376204816 + 1469035584 = 19396^2 + 38328^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1845240403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2306151 + ... + 2306950.

Almost surely, 2^1845240400 is an apocalyptic number.

1845240400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1845240400 is an abundant number, since it is smaller than the sum of its proper divisors (2587950622).

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

1845240400 is a wasteful number, since it uses less digits than its factorization.

1845240400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4613119 (or 4613108 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 1845240400 is about 42956.2614760642. The cubic root of 1845240400 is about 1226.5473491117.

Adding to 1845240400 its reverse (40425481), we get a palindrome (1885665881).

The spelling of 1845240400 in words is "one billion, eight hundred forty-five million, two hundred forty thousand, four hundred".