1324914991 has 2 divisors, whose sum is σ = 1324914992. Its totient is φ = 1324914990.

The previous prime is 1324914979. The next prime is 1324915013. The reversal of 1324914991 is 1994194231.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1324914991 - 2⁷ = 1324914863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1324914911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662457495 + 662457496.

It is an arithmetic number, because the mean of its divisors is an integer number (662457496).

Almost surely, 2^1324914991 is an apocalyptic number.

1324914991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1324914991 is an equidigital number, since it uses as much as digits as its factorization.

1324914991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 43.

The square root of 1324914991 is about 36399.3817392549. The cubic root of 1324914991 is about 1098.3211279102.

The spelling of 1324914991 in words is "one billion, three hundred twenty-four million, nine hundred fourteen thousand, nine hundred ninety-one".