1801434 has 8 divisors (see below), whose sum is σ = 3602880. Its totient is φ = 600476.

The previous prime is 1801433. The next prime is 1801453. The reversal of 1801434 is 4341081.

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

1801434 is an admirable number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1801434.

It is not an unprimeable number, because it can be changed into a prime (1801433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150114 + ... + 150125.

It is an arithmetic number, because the mean of its divisors is an integer number (450360).

2^1801434 is an apocalyptic number.

1801434 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.

1801434 is a wasteful number, since it uses less digits than its factorization.

1801434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300244.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1801434 is about 1342.1751003502. The cubic root of 1801434 is about 121.6763345876.

The spelling of 1801434 in words is "one million, eight hundred one thousand, four hundred thirty-four".