1954289 has 2 divisors, whose sum is σ = 1954290. Its totient is φ = 1954288.

The previous prime is 1954279. The next prime is 1954291. The reversal of 1954289 is 9824591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 984064 + 970225 = 992^2 + 985^2 .

It is a cyclic number.

It is not a de Polignac number, because 1954289 - 2⁴ = 1954273 is a prime.

Together with 1954291, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1954279) 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, 977144 + 977145.

It is an arithmetic number, because the mean of its divisors is an integer number (977145).

2^1954289 is an apocalyptic number.

It is an amenable number.

1954289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1954289 is an equidigital number, since it uses as much as digits as its factorization.

1954289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 38.

The square root of 1954289 is about 1397.9588692090. The cubic root of 1954289 is about 125.0248270686.

The spelling of 1954289 in words is "one million, nine hundred fifty-four thousand, two hundred eighty-nine".