1801455930 has 128 divisors (see below), whose sum is σ = 5231520000. Its totient is φ = 439375104.

The previous prime is 1801455919. The next prime is 1801455937. The reversal of 1801455930 is 395541081.

It is not an unprimeable number, because it can be changed into a prime (1801455937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 142716 + ... + 154824.

It is an arithmetic number, because the mean of its divisors is an integer number (40871250).

Almost surely, 2^1801455930 is an apocalyptic number.

1801455930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1801455930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2615760000).

1801455930 is an abundant number, since it is smaller than the sum of its proper divisors (3430064070).

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

1801455930 is a wasteful number, since it uses less digits than its factorization.

1801455930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12173 (or 12167 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 1801455930 is about 42443.5617025716. The cubic root of 1801455930 is about 1216.7682833331.

The spelling of 1801455930 in words is "one billion, eight hundred one million, four hundred fifty-five thousand, nine hundred thirty".