1812141 has 12 divisors (see below), whose sum is σ = 2632032. Its totient is φ = 1201416.

The previous prime is 1812137. The next prime is 1812157. The reversal of 1812141 is 1412181.

It is not a de Polignac number, because 1812141 - 2² = 1812137 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1812121) 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 11 ways as a sum of consecutive naturals, for example, 1600 + ... + 2486.

It is an arithmetic number, because the mean of its divisors is an integer number (219336).

2^1812141 is an apocalyptic number.

It is an amenable number.

1812141 is a deficient number, since it is larger than the sum of its proper divisors (819891).

1812141 is a wasteful number, since it uses less digits than its factorization.

1812141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120 (or 1117 counting only the distinct ones).

The product of its digits is 64, while the sum is 18.

The square root of 1812141 is about 1346.1578659281. The cubic root of 1812141 is about 121.9169236441.

It can be divided in two parts, 1812 and 141, that added together give a triangular number (1953 = T₆₂).

The spelling of 1812141 in words is "one million, eight hundred twelve thousand, one hundred forty-one".