1806137 has 2 divisors, whose sum is σ = 1806138. Its totient is φ = 1806136.

The previous prime is 1806113. The next prime is 1806143. The reversal of 1806137 is 7316081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1132096 + 674041 = 1064^2 + 821^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1806137 is a prime.

It is a Chen prime.

It is equal to p₁₃₅₄₉₄ and since 1806137 and 135494 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 (1806107) 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 as a sum of consecutive naturals, namely, 903068 + 903069.

It is an arithmetic number, because the mean of its divisors is an integer number (903069).

2^1806137 is an apocalyptic number.

It is an amenable number.

1806137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1806137 is an equidigital number, since it uses as much as digits as its factorization.

1806137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 1806137 is about 1343.9259652228. The cubic root of 1806137 is about 121.7821292928.

The spelling of 1806137 in words is "one million, eight hundred six thousand, one hundred thirty-seven".