1906811 has 2 divisors, whose sum is σ = 1906812. Its totient is φ = 1906810.

The previous prime is 1906757. The next prime is 1906829. The reversal of 1906811 is 1186091.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1906811 - 2⁶ = 1906747 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1906831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 953405 + 953406.

It is an arithmetic number, because the mean of its divisors is an integer number (953406).

2^1906811 is an apocalyptic number.

1906811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1906811 is an equidigital number, since it uses as much as digits as its factorization.

1906811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 1906811 is about 1380.8732744173. The cubic root of 1906811 is about 124.0040538043.

The spelling of 1906811 in words is "one million, nine hundred six thousand, eight hundred eleven".