1863413 has 2 divisors, whose sum is σ = 1863414. Its totient is φ = 1863412.

The previous prime is 1863403. The next prime is 1863451. The reversal of 1863413 is 3143681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1444804 + 418609 = 1202^2 + 647^2 .

It is a cyclic number.

It is not a de Polignac number, because 1863413 - 2⁸ = 1863157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1863403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 931706 + 931707.

It is an arithmetic number, because the mean of its divisors is an integer number (931707).

2^1863413 is an apocalyptic number.

It is an amenable number.

1863413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1863413 is an equidigital number, since it uses as much as digits as its factorization.

1863413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 26.

The square root of 1863413 is about 1365.0688627318. The cubic root of 1863413 is about 123.0560697943.

It can be divided in two parts, 18634 and 13, that multiplied together give a palindrome (242242).

The spelling of 1863413 in words is "one million, eight hundred sixty-three thousand, four hundred thirteen".