1801199 has 8 divisors (see below), whose sum is σ = 1907712. Its totient is φ = 1697080.

The previous prime is 1801187. The next prime is 1801207. The reversal of 1801199 is 9911081.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1801199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1801109) 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 7 ways as a sum of consecutive naturals, for example, 1082 + ... + 2184.

It is an arithmetic number, because the mean of its divisors is an integer number (238464).

2^1801199 is an apocalyptic number.

1801199 is a deficient number, since it is larger than the sum of its proper divisors (106513).

1801199 is a wasteful number, since it uses less digits than its factorization.

1801199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197.

The product of its (nonzero) digits is 648, while the sum is 29.

The square root of 1801199 is about 1342.0875530307. The cubic root of 1801199 is about 121.6710433988.

The spelling of 1801199 in words is "one million, eight hundred one thousand, one hundred ninety-nine".