1906867 has 2 divisors, whose sum is σ = 1906868. Its totient is φ = 1906866.

The previous prime is 1906843. The next prime is 1906871. The reversal of 1906867 is 7686091.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1906867 - 2⁷ = 1906739 is a prime.

It is a super-2 number, since 2×1906867² = 7272283511378, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1900867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 953433 + 953434.

It is an arithmetic number, because the mean of its divisors is an integer number (953434).

2^1906867 is an apocalyptic number.

1906867 is a deficient number, since it is larger than the sum of its proper divisors (1).

1906867 is an equidigital number, since it uses as much as digits as its factorization.

1906867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 1906867 is about 1380.8935512921. The cubic root of 1906867 is about 124.0052677263.

The spelling of 1906867 in words is "one million, nine hundred six thousand, eight hundred sixty-seven".