1830689940 has 48 divisors (see below), whose sum is σ = 5128256448. Its totient is φ = 487962624.

The previous prime is 1830689933. The next prime is 1830689941. The reversal of 1830689940 is 499860381.

It is a self number, because there is not a number n which added to its sum of digits gives 1830689940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1830689941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159639 + ... + 170721.

It is an arithmetic number, because the mean of its divisors is an integer number (106838676).

Almost surely, 2^1830689940 is an apocalyptic number.

1830689940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1830689940 is an abundant number, since it is smaller than the sum of its proper divisors (3297566508).

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

1830689940 is a wasteful number, since it uses less digits than its factorization.

1830689940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13848 (or 13846 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 1830689940 is about 42786.5626102401. The cubic root of 1830689940 is about 1223.3148986540.

The spelling of 1830689940 in words is "one billion, eight hundred thirty million, six hundred eighty-nine thousand, nine hundred forty".