1863361 has 2 divisors, whose sum is σ = 1863362. Its totient is φ = 1863360.

The previous prime is 1863347. The next prime is 1863371. The reversal of 1863361 is 1633681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1115136 + 748225 = 1056^2 + 865^2 .

It is a cyclic number.

It is not a de Polignac number, because 1863361 - 2¹³ = 1855169 is a prime.

It is a super-2 number, since 2×1863361² = 6944228432642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1863331) 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, 931680 + 931681.

It is an arithmetic number, because the mean of its divisors is an integer number (931681).

2^1863361 is an apocalyptic number.

It is an amenable number.

1863361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1863361 is an equidigital number, since it uses as much as digits as its factorization.

1863361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 28.

The square root of 1863361 is about 1365.0498159408. The cubic root of 1863361 is about 123.0549251250.

The spelling of 1863361 in words is "one million, eight hundred sixty-three thousand, three hundred sixty-one".