1830421500 has 96 divisors (see below), whose sum is σ = 5369145600. Its totient is φ = 484545600.

The previous prime is 1830421499. The next prime is 1830421543. The reversal of 1830421500 is 51240381.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 204111 + ... + 212889.

It is an arithmetic number, because the mean of its divisors is an integer number (55928600).

Almost surely, 2^1830421500 is an apocalyptic number.

1830421500 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 1830421500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2684572800).

1830421500 is an abundant number, since it is smaller than the sum of its proper divisors (3538724100).

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

1830421500 is a wasteful number, since it uses less digits than its factorization.

1830421500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8940 (or 8928 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1830421500 is about 42783.4255290527. The cubic root of 1830421500 is about 1223.2551028549.

Adding to 1830421500 its reverse (51240381), we get a palindrome (1881661881).

The spelling of 1830421500 in words is "one billion, eight hundred thirty million, four hundred twenty-one thousand, five hundred".