1327206091 has 2 divisors, whose sum is σ = 1327206092. Its totient is φ = 1327206090.

The previous prime is 1327206079. The next prime is 1327206109. The reversal of 1327206091 is 1906027231.

Together with next prime (1327206109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (1906027231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1327206091 - 2⁵ = 1327206059 is a prime.

It is a super-2 number, since 2×1327206091² = 3522952015975000562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1327246091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663603045 + 663603046.

It is an arithmetic number, because the mean of its divisors is an integer number (663603046).

Almost surely, 2^1327206091 is an apocalyptic number.

1327206091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1327206091 is an equidigital number, since it uses as much as digits as its factorization.

1327206091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 1327206091 is about 36430.8398338551. The cubic root of 1327206091 is about 1098.9538513874.

The spelling of 1327206091 in words is "one billion, three hundred twenty-seven million, two hundred six thousand, ninety-one".