1804213600 has 144 divisors (see below), whose sum is σ = 5062176000. Its totient is φ = 615098880.

The previous prime is 1804213583. The next prime is 1804213643. The reversal of 1804213600 is 63124081.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1113591 + ... + 1115209.

It is an arithmetic number, because the mean of its divisors is an integer number (35154000).

Almost surely, 2^1804213600 is an apocalyptic number.

1804213600 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 1804213600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2531088000).

1804213600 is an abundant number, since it is smaller than the sum of its proper divisors (3257962400).

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

1804213600 is a wasteful number, since it uses less digits than its factorization.

1804213600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845 (or 1832 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1804213600 is about 42476.0355965573. The cubic root of 1804213600 is about 1217.3888433698.

Adding to 1804213600 its reverse (63124081), we get a palindrome (1867337681).

The spelling of 1804213600 in words is "one billion, eight hundred four million, two hundred thirteen thousand, six hundred".