1801904334 has 8 divisors (see below), whose sum is σ = 3603808680. Its totient is φ = 600634776.

The previous prime is 1801904323. The next prime is 1801904339. The reversal of 1801904334 is 4334091081.

It is a sphenic number, since it is the product of 3 distinct primes.

1801904334 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1801904295 and 1801904304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1801904339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150158689 + ... + 150158700.

It is an arithmetic number, because the mean of its divisors is an integer number (450476085).

Almost surely, 2^1801904334 is an apocalyptic number.

1801904334 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1801904334 is a wasteful number, since it uses less digits than its factorization.

1801904334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300317394.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 1801904334 is about 42448.8437298356. The cubic root of 1801904334 is about 1216.8692310339.

The spelling of 1801904334 in words is "one billion, eight hundred one million, nine hundred four thousand, three hundred thirty-four".