1945369 has 2 divisors, whose sum is σ = 1945370. Its totient is φ = 1945368.

The previous prime is 1945337. The next prime is 1945381. The reversal of 1945369 is 9635491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1795600 + 149769 = 1340^2 + 387^2 .

It is a cyclic number.

It is not a de Polignac number, because 1945369 - 2⁵ = 1945337 is a prime.

It is a super-2 number, since 2×1945369² = 7568921092322, which contains 22 as substring.

It is a d-powerful number, because it can be written as 1 + 9³ + 4¹⁰ + 5⁷ + 3¹² + 6⁷ + 9⁴ .

It is not a weakly prime, because it can be changed into another prime (1945309) 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, 972684 + 972685.

It is an arithmetic number, because the mean of its divisors is an integer number (972685).

2^1945369 is an apocalyptic number.

It is an amenable number.

1945369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1945369 is an equidigital number, since it uses as much as digits as its factorization.

1945369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 37.

The square root of 1945369 is about 1394.7648547336. The cubic root of 1945369 is about 124.8343191626.

The spelling of 1945369 in words is "one million, nine hundred forty-five thousand, three hundred sixty-nine".