1801366 has 8 divisors (see below), whose sum is σ = 3088080. Its totient is φ = 772008.

The previous prime is 1801363. The next prime is 1801403. The reversal of 1801366 is 6631081.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1801366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1801361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64321 + ... + 64348.

It is an arithmetic number, because the mean of its divisors is an integer number (386010).

2^1801366 is an apocalyptic number.

1801366 is a deficient number, since it is larger than the sum of its proper divisors (1286714).

1801366 is a wasteful number, since it uses less digits than its factorization.

1801366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128678.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1801366 is about 1342.1497680959. The cubic root of 1801366 is about 121.6748035675.

The spelling of 1801366 in words is "one million, eight hundred one thousand, three hundred sixty-six".