1322748997 has 2 divisors, whose sum is σ = 1322748998. Its totient is φ = 1322748996.

The previous prime is 1322748953. The next prime is 1322749007. The reversal of 1322748997 is 7998472231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1072824516 + 249924481 = 32754^2 + 15809^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1322748997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1322748397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661374498 + 661374499.

It is an arithmetic number, because the mean of its divisors is an integer number (661374499).

Almost surely, 2^1322748997 is an apocalyptic number.

It is an amenable number.

1322748997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1322748997 is an equidigital number, since it uses as much as digits as its factorization.

1322748997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 52.

The square root of 1322748997 is about 36369.6163988569. The cubic root of 1322748997 is about 1097.7222833165.

The spelling of 1322748997 in words is "one billion, three hundred twenty-two million, seven hundred forty-eight thousand, nine hundred ninety-seven".