1916573 has 2 divisors, whose sum is σ = 1916574. Its totient is φ = 1916572.

The previous prime is 1916543. The next prime is 1916591. The reversal of 1916573 is 3756191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1898884 + 17689 = 1378^2 + 133^2 .

It is a cyclic number.

It is not a de Polignac number, because 1916573 - 2¹⁴ = 1900189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1916543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 958286 + 958287.

It is an arithmetic number, because the mean of its divisors is an integer number (958287).

2^1916573 is an apocalyptic number.

It is an amenable number.

1916573 is a deficient number, since it is larger than the sum of its proper divisors (1).

1916573 is an equidigital number, since it uses as much as digits as its factorization.

1916573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5670, while the sum is 32.

The square root of 1916573 is about 1384.4034816483. The cubic root of 1916573 is about 124.2153083801.

The spelling of 1916573 in words is "one million, nine hundred sixteen thousand, five hundred seventy-three".