1936021 has 2 divisors, whose sum is σ = 1936022. Its totient is φ = 1936020.

The previous prime is 1935991. The next prime is 1936027. The reversal of 1936021 is 1206391.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1232100 + 703921 = 1110^2 + 839^2 .

It is an emirp because it is prime and its reverse (1206391) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1936021 - 2⁷ = 1935893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1935983 and 1936001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1936027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 968010 + 968011.

It is an arithmetic number, because the mean of its divisors is an integer number (968011).

2^1936021 is an apocalyptic number.

It is an amenable number.

1936021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1936021 is an equidigital number, since it uses as much as digits as its factorization.

1936021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 1936021 is about 1391.4097167980. The cubic root of 1936021 is about 124.6340443238.

The spelling of 1936021 in words is "one million, nine hundred thirty-six thousand, twenty-one".