1926191 has 2 divisors, whose sum is σ = 1926192. Its totient is φ = 1926190.

The previous prime is 1926187. The next prime is 1926217. The reversal of 1926191 is 1916291.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1926191 - 2² = 1926187 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1926161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 963095 + 963096.

It is an arithmetic number, because the mean of its divisors is an integer number (963096).

2^1926191 is an apocalyptic number.

1926191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1926191 is an equidigital number, since it uses as much as digits as its factorization.

1926191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972, while the sum is 29.

The square root of 1926191 is about 1387.8728327912. The cubic root of 1926191 is about 124.4227463291.

The spelling of 1926191 in words is "one million, nine hundred twenty-six thousand, one hundred ninety-one".