1326640241 has 2 divisors, whose sum is σ = 1326640242. Its totient is φ = 1326640240.

The previous prime is 1326640223. The next prime is 1326640277. The reversal of 1326640241 is 1420466231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1229203600 + 97436641 = 35060^2 + 9871^2 .

It is a cyclic number.

It is not a de Polignac number, because 1326640241 - 2²² = 1322445937 is a prime.

It is not a weakly prime, because it can be changed into another prime (1326640201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663320120 + 663320121.

It is an arithmetic number, because the mean of its divisors is an integer number (663320121).

Almost surely, 2^1326640241 is an apocalyptic number.

It is an amenable number.

1326640241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1326640241 is an equidigital number, since it uses as much as digits as its factorization.

1326640241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 1326640241 is about 36423.0729208835. The cubic root of 1326640241 is about 1098.7976507200.

The spelling of 1326640241 in words is "one billion, three hundred twenty-six million, six hundred forty thousand, two hundred forty-one".