1263109 has 2 divisors, whose sum is σ = 1263110. Its totient is φ = 1263108.

The previous prime is 1263107. The next prime is 1263113. The reversal of 1263109 is 9013621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1258884 + 4225 = 1122^2 + 65^2 .

It is a cyclic number.

It is not a de Polignac number, because 1263109 - 2¹ = 1263107 is a prime.

Together with 1263107, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1263109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1263103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631554 + 631555.

It is an arithmetic number, because the mean of its divisors is an integer number (631555).

2^1263109 is an apocalyptic number.

It is an amenable number.

1263109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263109 is an equidigital number, since it uses as much as digits as its factorization.

1263109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 1263109 is about 1123.8812214821. The cubic root of 1263109 is about 108.0969922000.

The spelling of 1263109 in words is "one million, two hundred sixty-three thousand, one hundred nine".