1809093 has 16 divisors (see below), whose sum is σ = 2834496. Its totient is φ = 1011840.

The previous prime is 1809091. The next prime is 1809097. The reversal of 1809093 is 3909081.

It is a happy number.

It is not a de Polignac number, because 1809093 - 2¹ = 1809091 is a prime.

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 1809093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1809091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1680 + ... + 2537.

It is an arithmetic number, because the mean of its divisors is an integer number (177156).

2^1809093 is an apocalyptic number.

1809093 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1809093 is a deficient number, since it is larger than the sum of its proper divisors (1025403).

1809093 is a wasteful number, since it uses less digits than its factorization.

1809093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4244.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 1809093 is about 1345.0252785729. The cubic root of 1809093 is about 121.8485310040.

The spelling of 1809093 in words is "one million, eight hundred nine thousand, ninety-three".