1820038224 has 40 divisors (see below), whose sum is σ = 4978342080. Its totient is φ = 570992128.

The previous prime is 1820038223. The next prime is 1820038237. The reversal of 1820038224 is 4228300281.

It is a junction number, because it is equal to n+sod(n) for n = 1820038191 and 1820038200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1820038223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1114404 + ... + 1116035.

It is an arithmetic number, because the mean of its divisors is an integer number (124458552).

Almost surely, 2^1820038224 is an apocalyptic number.

It is an amenable number.

1820038224 is an abundant number, since it is smaller than the sum of its proper divisors (3158303856).

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

1820038224 is a wasteful number, since it uses less digits than its factorization.

1820038224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230467 (or 2230461 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 1820038224 is about 42661.9060052408. The cubic root of 1820038224 is about 1220.9376970855.

The spelling of 1820038224 in words is "one billion, eight hundred twenty million, thirty-eight thousand, two hundred twenty-four".