1318633 has 2 divisors, whose sum is σ = 1318634. Its totient is φ = 1318632.

The previous prime is 1318609. The next prime is 1318661. The reversal of 1318633 is 3368131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1317904 + 729 = 1148^2 + 27^2 .

It is a cyclic number.

It is not a de Polignac number, because 1318633 - 2¹⁷ = 1187561 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1318598 and 1318607.

It is not a weakly prime, because it can be changed into another prime (1318663) 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, 659316 + 659317.

It is an arithmetic number, because the mean of its divisors is an integer number (659317).

2^1318633 is an apocalyptic number.

It is an amenable number.

1318633 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318633 is an equidigital number, since it uses as much as digits as its factorization.

1318633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 25.

The square root of 1318633 is about 1148.3174648154. The cubic root of 1318633 is about 109.6582506432.

The spelling of 1318633 in words is "one million, three hundred eighteen thousand, six hundred thirty-three".