1326426281 has 2 divisors, whose sum is σ = 1326426282. Its totient is φ = 1326426280.

The previous prime is 1326426263. The next prime is 1326426329. The reversal of 1326426281 is 1826246231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1248986281 + 77440000 = 35341^2 + 8800^2 .

It is a cyclic number.

It is not a de Polignac number, because 1326426281 - 2⁶ = 1326426217 is a prime.

It is a super-2 number, since 2×1326426281² = 3518813357854981922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1326426251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663213140 + 663213141.

It is an arithmetic number, because the mean of its divisors is an integer number (663213141).

Almost surely, 2^1326426281 is an apocalyptic number.

It is an amenable number.

1326426281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1326426281 is an equidigital number, since it uses as much as digits as its factorization.

1326426281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 35.

The square root of 1326426281 is about 36420.1356532345. The cubic root of 1326426281 is about 1098.7385763309.

The spelling of 1326426281 in words is "one billion, three hundred twenty-six million, four hundred twenty-six thousand, two hundred eighty-one".