1919369 has 2 divisors, whose sum is σ = 1919370. Its totient is φ = 1919368.

The previous prime is 1919363. The next prime is 1919377. The reversal of 1919369 is 9639191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1721344 + 198025 = 1312^2 + 445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1919369 is a prime.

It is a super-2 number, since 2×1919369² = 7367954716322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1919363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 959684 + 959685.

It is an arithmetic number, because the mean of its divisors is an integer number (959685).

2^1919369 is an apocalyptic number.

It is an amenable number.

1919369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1919369 is an equidigital number, since it uses as much as digits as its factorization.

1919369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13122, while the sum is 38.

The square root of 1919369 is about 1385.4129348321. The cubic root of 1919369 is about 124.2756830261.

The spelling of 1919369 in words is "one million, nine hundred nineteen thousand, three hundred sixty-nine".