1801234 has 16 divisors (see below), whose sum is σ = 2813976. Its totient is φ = 864000.

The previous prime is 1801229. The next prime is 1801237. The reversal of 1801234 is 4321081.

It can be written as a sum of positive squares in 4 ways, for example, as 1682209 + 119025 = 1297^2 + 345^2 .

It is not an unprimeable number, because it can be changed into a prime (1801237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7354 + ... + 7594.

2^1801234 is an apocalyptic number.

1801234 is a deficient number, since it is larger than the sum of its proper divisors (1012742).

1801234 is a wasteful number, since it uses less digits than its factorization.

1801234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1801234 is about 1342.1005923551. The cubic root of 1801234 is about 121.6718314773.

The spelling of 1801234 in words is "one million, eight hundred one thousand, two hundred thirty-four".