1906237 has 2 divisors, whose sum is σ = 1906238. Its totient is φ = 1906236.

The previous prime is 1906211. The next prime is 1906241. The reversal of 1906237 is 7326091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1819801 + 86436 = 1349^2 + 294^2 .

It is a cyclic number.

It is not a de Polignac number, because 1906237 - 2⁷ = 1906109 is a prime.

It is a Chen prime.

1906237 is a lucky number.

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1906297) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 953118 + 953119.

It is an arithmetic number, because the mean of its divisors is an integer number (953119).

2^1906237 is an apocalyptic number.

It is an amenable number.

1906237 is a deficient number, since it is larger than the sum of its proper divisors (1).

1906237 is an equidigital number, since it uses as much as digits as its factorization.

1906237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 1906237 is about 1380.6654192816. The cubic root of 1906237 is about 123.9916097341.

It can be divided in two parts, 190 and 6237, that multiplied together give a triangular number (1185030 = T₁₅₃₉).

The spelling of 1906237 in words is "one million, nine hundred six thousand, two hundred thirty-seven".