18341837 has 2 divisors, whose sum is σ = 18341838. Its totient is φ = 18341836.

The previous prime is 18341831. The next prime is 18341849. The reversal of 18341837 is 73814381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14523721 + 3818116 = 3811^2 + 1954^2 .

It is a cyclic number.

It is not a de Polignac number, because 18341837 - 2⁸ = 18341581 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 18341797 and 18341806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18341831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9170918 + 9170919.

It is an arithmetic number, because the mean of its divisors is an integer number (9170919).

Almost surely, 2^18341837 is an apocalyptic number.

It is an amenable number.

18341837 is a deficient number, since it is larger than the sum of its proper divisors (1).

18341837 is an equidigital number, since it uses as much as digits as its factorization.

18341837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 35.

The square root of 18341837 is about 4282.7370920943. The cubic root of 18341837 is about 263.7227585800.

The spelling of 18341837 in words is "eighteen million, three hundred forty-one thousand, eight hundred thirty-seven".