1864469 has 2 divisors, whose sum is σ = 1864470. Its totient is φ = 1864468.

The previous prime is 1864463. The next prime is 1864483. The reversal of 1864469 is 9644681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1575025 + 289444 = 1255^2 + 538^2 .

It is a cyclic number.

It is not a de Polignac number, because 1864469 - 2⁴ = 1864453 is a prime.

It is a super-2 number, since 2×1864469² = 6952489303922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1864463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 932234 + 932235.

It is an arithmetic number, because the mean of its divisors is an integer number (932235).

2^1864469 is an apocalyptic number.

It is an amenable number.

1864469 is a deficient number, since it is larger than the sum of its proper divisors (1).

1864469 is an equidigital number, since it uses as much as digits as its factorization.

1864469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 38.

The square root of 1864469 is about 1365.4556016217. The cubic root of 1864469 is about 123.0793107810.

The spelling of 1864469 in words is "one million, eight hundred sixty-four thousand, four hundred sixty-nine".