1816788200 has 48 divisors (see below), whose sum is σ = 4240978560. Its totient is φ = 723800000.

The previous prime is 1816788191. The next prime is 1816788209. The reversal of 1816788200 is 28876181.

It is an interprime number because it is at equal distance from previous prime (1816788191) and next prime (1816788209).

It is not an unprimeable number, because it can be changed into a prime (1816788209) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 32105 + ... + 68295.

It is an arithmetic number, because the mean of its divisors is an integer number (88353720).

Almost surely, 2^1816788200 is an apocalyptic number.

1816788200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1816788200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2120489280).

1816788200 is an abundant number, since it is smaller than the sum of its proper divisors (2424190360).

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

1816788200 is a wasteful number, since it uses less digits than its factorization.

1816788200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36458 (or 36449 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 41.

The square root of 1816788200 is about 42623.7985167911. The cubic root of 1816788200 is about 1220.2105253463.

The spelling of 1816788200 in words is "one billion, eight hundred sixteen million, seven hundred eighty-eight thousand, two hundred".