1878220800 has 252 divisors, whose sum is σ = 6734395980. Its totient is φ = 500367360.

The previous prime is 1878220793. The next prime is 1878220819. The reversal of 1878220800 is 80228781.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1842691 + ... + 1843709.

Almost surely, 2^1878220800 is an apocalyptic number.

1878220800 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 1878220800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3367197990).

1878220800 is an abundant number, since it is smaller than the sum of its proper divisors (4856175180).

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

1878220800 is a wasteful number, since it uses less digits than its factorization.

1878220800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061 (or 1029 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 1878220800 is about 43338.4448267355. Note that the first 3 decimals coincide. The cubic root of 1878220800 is about 1233.8116933455.

The spelling of 1878220800 in words is "one billion, eight hundred seventy-eight million, two hundred twenty thousand, eight hundred".