1946921 has 2 divisors, whose sum is σ = 1946922. Its totient is φ = 1946920.

The previous prime is 1946909. The next prime is 1946933. The reversal of 1946921 is 1296491.

It is a balanced prime because it is at equal distance from previous prime (1946909) and next prime (1946933).

It can be written as a sum of positive squares in only one way, i.e., 1795600 + 151321 = 1340^2 + 389^2 .

It is a cyclic number.

It is not a de Polignac number, because 1946921 - 2¹⁸ = 1684777 is a prime.

It is not a weakly prime, because it can be changed into another prime (1946981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 973460 + 973461.

It is an arithmetic number, because the mean of its divisors is an integer number (973461).

2^1946921 is an apocalyptic number.

It is an amenable number.

1946921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1946921 is an equidigital number, since it uses as much as digits as its factorization.

1946921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 32.

The square root of 1946921 is about 1395.3211099958. The cubic root of 1946921 is about 124.8675076158.

The spelling of 1946921 in words is "one million, nine hundred forty-six thousand, nine hundred twenty-one".