1936813 has 2 divisors, whose sum is σ = 1936814. Its totient is φ = 1936812.

The previous prime is 1936789. The next prime is 1936817. The reversal of 1936813 is 3186391.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1261129 + 675684 = 1123^2 + 822^2 .

It is a cyclic number.

It is not a de Polignac number, because 1936813 - 2¹³ = 1928621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1936817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 968406 + 968407.

It is an arithmetic number, because the mean of its divisors is an integer number (968407).

2^1936813 is an apocalyptic number.

It is an amenable number.

1936813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1936813 is an equidigital number, since it uses as much as digits as its factorization.

1936813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 31.

The square root of 1936813 is about 1391.6942911430. The cubic root of 1936813 is about 124.6510373739.

The spelling of 1936813 in words is "one million, nine hundred thirty-six thousand, eight hundred thirteen".