1327418777 has 2 divisors, whose sum is σ = 1327418778. Its totient is φ = 1327418776.

The previous prime is 1327418767. The next prime is 1327418779. The reversal of 1327418777 is 7778147231.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1120173961 + 207244816 = 33469^2 + 14396^2 .

It is an emirp because it is prime and its reverse (7778147231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1327418777 - 2¹² = 1327414681 is a prime.

Together with 1327418779, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1327418779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663709388 + 663709389.

It is an arithmetic number, because the mean of its divisors is an integer number (663709389).

Almost surely, 2^1327418777 is an apocalyptic number.

It is an amenable number.

1327418777 is a deficient number, since it is larger than the sum of its proper divisors (1).

1327418777 is an equidigital number, since it uses as much as digits as its factorization.

1327418777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 460992, while the sum is 47.

The square root of 1327418777 is about 36433.7587547593. The cubic root of 1327418777 is about 1099.0125510413.

The spelling of 1327418777 in words is "one billion, three hundred twenty-seven million, four hundred eighteen thousand, seven hundred seventy-seven".