1836081 has 16 divisors (see below), whose sum is σ = 2929920. Its totient is φ = 1129680.

The previous prime is 1836073. The next prime is 1836091. The reversal of 1836081 is 1806381.

It is not a de Polignac number, because 1836081 - 2³ = 1836073 is a prime.

It is a super-2 number, since 2×1836081² = 6742386877122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1836011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2265 + ... + 2966.

It is an arithmetic number, because the mean of its divisors is an integer number (183120).

2^1836081 is an apocalyptic number.

It is an amenable number.

1836081 is a deficient number, since it is larger than the sum of its proper divisors (1093839).

1836081 is a wasteful number, since it uses less digits than its factorization.

1836081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5253 (or 5247 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1836081 is about 1355.0206640491. The cubic root of 1836081 is about 122.4514537612.

The spelling of 1836081 in words is "one million, eight hundred thirty-six thousand, eighty-one".