1845046900 has 18 divisors (see below), whose sum is σ = 4003751990. Its totient is φ = 738018720.

The previous prime is 1845046883. The next prime is 1845046901. The reversal of 1845046900 is 96405481.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 784 + 1845046116 = 28^2 + 42954^2 .

It is a super-3 number, since 3×1845046900³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1845046900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1845046901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9225135 + ... + 9225334.

Almost surely, 2^1845046900 is an apocalyptic number.

1845046900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1845046900 is an abundant number, since it is smaller than the sum of its proper divisors (2158705090).

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

1845046900 is a wasteful number, since it uses less digits than its factorization.

1845046900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18450483 (or 18450476 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 1845046900 is about 42954.0091260408. The cubic root of 1845046900 is about 1226.5044739017.

The spelling of 1845046900 in words is "one billion, eight hundred forty-five million, forty-six thousand, nine hundred".