1324918649 has 4 divisors (see below), whose sum is σ = 1357233780. Its totient is φ = 1292603520.

The previous prime is 1324918627. The next prime is 1324918667. The reversal of 1324918649 is 9468194231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55279225 + 1269639424 = 7435^2 + 35632^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1324918649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1324918349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16157504 + ... + 16157585.

It is an arithmetic number, because the mean of its divisors is an integer number (339308445).

Almost surely, 2^1324918649 is an apocalyptic number.

It is an amenable number.

1324918649 is a deficient number, since it is larger than the sum of its proper divisors (32315131).

1324918649 is an equidigital number, since it uses as much as digits as its factorization.

1324918649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32315130.

The product of its digits is 373248, while the sum is 47.

The square root of 1324918649 is about 36399.4319873264. The cubic root of 1324918649 is about 1098.3221387059.

The spelling of 1324918649 in words is "one billion, three hundred twenty-four million, nine hundred eighteen thousand, six hundred forty-nine".