1964213 has 2 divisors, whose sum is σ = 1964214. Its totient is φ = 1964212.

The previous prime is 1964203. The next prime is 1964243. The reversal of 1964213 is 3124691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1909924 + 54289 = 1382^2 + 233^2 .

It is an emirp because it is prime and its reverse (3124691) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1964213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1964203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 982106 + 982107.

It is an arithmetic number, because the mean of its divisors is an integer number (982107).

2^1964213 is an apocalyptic number.

It is an amenable number.

1964213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1964213 is an equidigital number, since it uses as much as digits as its factorization.

1964213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 26.

The square root of 1964213 is about 1401.5038351713. The cubic root of 1964213 is about 125.2360977819.

The spelling of 1964213 in words is "one million, nine hundred sixty-four thousand, two hundred thirteen".