1318829 has 2 divisors, whose sum is σ = 1318830. Its totient is φ = 1318828.

The previous prime is 1318789. The next prime is 1318831. The reversal of 1318829 is 9288131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 946729 + 372100 = 973^2 + 610^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1318829 is a prime.

It is a Sophie Germain prime.

Together with 1318831, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1318795 and 1318804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1318859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659414 + 659415.

It is an arithmetic number, because the mean of its divisors is an integer number (659415).

2^1318829 is an apocalyptic number.

It is an amenable number.

1318829 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318829 is an equidigital number, since it uses as much as digits as its factorization.

1318829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 32.

The square root of 1318829 is about 1148.4028038977. The cubic root of 1318829 is about 109.6636835302.

The spelling of 1318829 in words is "one million, three hundred eighteen thousand, eight hundred twenty-nine".