1804459340 has 24 divisors (see below), whose sum is σ = 3807332592. Its totient is φ = 718361280.

The previous prime is 1804459309. The next prime is 1804459351. The reversal of 1804459340 is 439544081.

It is a junction number, because it is equal to n+sod(n) for n = 1804459294 and 1804459303.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209579 + ... + 218018.

It is an arithmetic number, because the mean of its divisors is an integer number (158638858).

Almost surely, 2^1804459340 is an apocalyptic number.

1804459340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1804459340 is an abundant number, since it is smaller than the sum of its proper divisors (2002873252).

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

1804459340 is a wasteful number, since it uses less digits than its factorization.

1804459340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427817 (or 427815 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 1804459340 is about 42478.9281879852. The cubic root of 1804459340 is about 1217.4441116878. Note that the first 3 decimals are identical.

The spelling of 1804459340 in words is "one billion, eight hundred four million, four hundred fifty-nine thousand, three hundred forty".