1801144 has 8 divisors (see below), whose sum is σ = 3377160. Its totient is φ = 900568.

The previous prime is 1801117. The next prime is 1801187. The reversal of 1801144 is 4411081.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112564 + ... + 112579.

It is an arithmetic number, because the mean of its divisors is an integer number (422145).

2^1801144 is an apocalyptic number.

It is an amenable number.

1801144 is a deficient number, since it is larger than the sum of its proper divisors (1576016).

1801144 is a wasteful number, since it uses less digits than its factorization.

1801144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225149 (or 225145 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 1801144 is about 1342.0670624078. The cubic root of 1801144 is about 121.6698049690.

The spelling of 1801144 in words is "one million, eight hundred one thousand, one hundred forty-four".