1921063 has 2 divisors, whose sum is σ = 1921064. Its totient is φ = 1921062.

The previous prime is 1921037. The next prime is 1921069. The reversal of 1921063 is 3601291.

It is a strong prime.

It is an emirp because it is prime and its reverse (3601291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1921063 - 2⁹ = 1920551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1921069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 960531 + 960532.

It is an arithmetic number, because the mean of its divisors is an integer number (960532).

2^1921063 is an apocalyptic number.

1921063 is a deficient number, since it is larger than the sum of its proper divisors (1).

1921063 is an equidigital number, since it uses as much as digits as its factorization.

1921063 is an evil number, because the sum of its binary digits is even.

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

The square root of 1921063 is about 1386.0241700634. The cubic root of 1921063 is about 124.3122334241.

The spelling of 1921063 in words is "one million, nine hundred twenty-one thousand, sixty-three".