1836091 has 2 divisors, whose sum is σ = 1836092. Its totient is φ = 1836090.

The previous prime is 1836073. The next prime is 1836151. The reversal of 1836091 is 1906381.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (1906381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1836091 - 2⁵ = 1836059 is a prime.

It is equal to p₁₃₇₅₉₃ and since 1836091 and 137593 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (1836011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 918045 + 918046.

It is an arithmetic number, because the mean of its divisors is an integer number (918046).

2^1836091 is an apocalyptic number.

1836091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1836091 is an equidigital number, since it uses as much as digits as its factorization.

1836091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1836091 is about 1355.0243540247. The cubic root of 1836091 is about 122.4516760667.

The spelling of 1836091 in words is "one million, eight hundred thirty-six thousand, ninety-one".