1946689 has 2 divisors, whose sum is σ = 1946690. Its totient is φ = 1946688.

The previous prime is 1946671. The next prime is 1946699. The reversal of 1946689 is 9866491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1937664 + 9025 = 1392^2 + 95^2 .

It is a cyclic number.

It is not a de Polignac number, because 1946689 - 2⁵ = 1946657 is a prime.

It is not a weakly prime, because it can be changed into another prime (1946629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 973344 + 973345.

It is an arithmetic number, because the mean of its divisors is an integer number (973345).

2^1946689 is an apocalyptic number.

It is an amenable number.

1946689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1946689 is an equidigital number, since it uses as much as digits as its factorization.

1946689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 43.

The square root of 1946689 is about 1395.2379725337. The cubic root of 1946689 is about 124.8625475767.

The spelling of 1946689 in words is "one million, nine hundred forty-six thousand, six hundred eighty-nine".