1819225120 has 48 divisors (see below), whose sum is σ = 4318368768. Its totient is φ = 724227840.

The previous prime is 1819225087. The next prime is 1819225127. The reversal of 1819225120 is 215229181.

It is not an unprimeable number, because it can be changed into a prime (1819225127) 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, 6817 + ... + 60703.

It is an arithmetic number, because the mean of its divisors is an integer number (89966016).

Almost surely, 2^1819225120 is an apocalyptic number.

1819225120 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 1819225120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2159184384).

1819225120 is an abundant number, since it is smaller than the sum of its proper divisors (2499143648).

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

1819225120 is a wasteful number, since it uses less digits than its factorization.

1819225120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54113 (or 54105 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 1819225120 is about 42652.3753148638. The cubic root of 1819225120 is about 1220.7558516007.

The spelling of 1819225120 in words is "one billion, eight hundred nineteen million, two hundred twenty-five thousand, one hundred twenty".