1326446993 has 2 divisors, whose sum is σ = 1326446994. Its totient is φ = 1326446992.

The previous prime is 1326446971. The next prime is 1326447043. The reversal of 1326446993 is 3996446231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1082212609 + 244234384 = 32897^2 + 15628^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1326446993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1326446923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663223496 + 663223497.

It is an arithmetic number, because the mean of its divisors is an integer number (663223497).

Almost surely, 2^1326446993 is an apocalyptic number.

It is an amenable number.

1326446993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1326446993 is an equidigital number, since it uses as much as digits as its factorization.

1326446993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 47.

The square root of 1326446993 is about 36420.4200003240. The cubic root of 1326446993 is about 1098.7442951950.

The spelling of 1326446993 in words is "one billion, three hundred twenty-six million, four hundred forty-six thousand, nine hundred ninety-three".