1864417 has 2 divisors, whose sum is σ = 1864418. Its totient is φ = 1864416.

The previous prime is 1864399. The next prime is 1864427. The reversal of 1864417 is 7144681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1806336 + 58081 = 1344^2 + 241^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1864417 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1864427) 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, 932208 + 932209.

It is an arithmetic number, because the mean of its divisors is an integer number (932209).

2^1864417 is an apocalyptic number.

It is an amenable number.

1864417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1864417 is an equidigital number, since it uses as much as digits as its factorization.

1864417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 31.

The square root of 1864417 is about 1365.4365602253. The cubic root of 1864417 is about 123.0781665439.

The spelling of 1864417 in words is "one million, eight hundred sixty-four thousand, four hundred seventeen".