1326118049 has 4 divisors (see below), whose sum is σ = 1344795840. Its totient is φ = 1307440260.

The previous prime is 1326118037. The next prime is 1326118051. The reversal of 1326118049 is 9408116231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1326118049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1326118009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9338789 + ... + 9338930.

It is an arithmetic number, because the mean of its divisors is an integer number (336198960).

Almost surely, 2^1326118049 is an apocalyptic number.

It is an amenable number.

1326118049 is a deficient number, since it is larger than the sum of its proper divisors (18677791).

1326118049 is an equidigital number, since it uses as much as digits as its factorization.

1326118049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18677790.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 1326118049 is about 36415.9037921620. The cubic root of 1326118049 is about 1098.6534622591.

The spelling of 1326118049 in words is "one billion, three hundred twenty-six million, one hundred eighteen thousand, forty-nine".