2190371 has 2 divisors, whose sum is σ = 2190372. Its totient is φ = 2190370.

The previous prime is 2190361. The next prime is 2190389. The reversal of 2190371 is 1730912.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2190371 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2190311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1095185 + 1095186.

It is an arithmetic number, because the mean of its divisors is an integer number (1095186).

2^2190371 is an apocalyptic number.

2190371 is a deficient number, since it is larger than the sum of its proper divisors (1).

2190371 is an equidigital number, since it uses as much as digits as its factorization.

2190371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 2190371 is about 1479.9902026703. The cubic root of 2190371 is about 129.8691187689.

The spelling of 2190371 in words is "two million, one hundred ninety thousand, three hundred seventy-one".