1800228380 has 12 divisors (see below), whose sum is σ = 3780479640. Its totient is φ = 720091344.

The previous prime is 1800228349. The next prime is 1800228383. The reversal of 1800228380 is 838220081.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1800228383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45005690 + ... + 45005729.

It is an arithmetic number, because the mean of its divisors is an integer number (315039970).

Almost surely, 2^1800228380 is an apocalyptic number.

1800228380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1800228380 is an abundant number, since it is smaller than the sum of its proper divisors (1980251260).

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

1800228380 is a wasteful number, since it uses less digits than its factorization.

1800228380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90011428 (or 90011426 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 1800228380 is about 42429.0982699373. The cubic root of 1800228380 is about 1216.4918433572.

The spelling of 1800228380 in words is "one billion, eight hundred million, two hundred twenty-eight thousand, three hundred eighty".