1850081 has 4 divisors (see below), whose sum is σ = 1869252. Its totient is φ = 1830912.

The previous prime is 1850053. The next prime is 1850089. The reversal of 1850081 is 1800581.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 312481 + 1537600 = 559^2 + 1240^2 .

It is a cyclic number.

It is not a de Polignac number, because 1850081 - 2¹⁴ = 1833697 is a prime.

It is a super-2 number, since 2×1850081² = 6845599413122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1850089) 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 3 ways as a sum of consecutive naturals, for example, 9440 + ... + 9633.

It is an arithmetic number, because the mean of its divisors is an integer number (467313).

2^1850081 is an apocalyptic number.

It is an amenable number.

1850081 is a deficient number, since it is larger than the sum of its proper divisors (19171).

1850081 is an equidigital number, since it uses as much as digits as its factorization.

1850081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19170.

The product of its (nonzero) digits is 320, while the sum is 23.

The square root of 1850081 is about 1360.1768267398. The cubic root of 1850081 is about 122.7618942270.

It can be divided in two parts, 18500 and 81, that added together give a palindrome (18581).

The spelling of 1850081 in words is "one million, eight hundred fifty thousand, eighty-one".