1327776949 has 2 divisors, whose sum is σ = 1327776950. Its totient is φ = 1327776948.

The previous prime is 1327776941. The next prime is 1327776991. The reversal of 1327776949 is 9496777231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1287517924 + 40259025 = 35882^2 + 6345^2 .

It is a cyclic number.

It is not a de Polignac number, because 1327776949 - 2³ = 1327776941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1327776949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1327776941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663888474 + 663888475.

It is an arithmetic number, because the mean of its divisors is an integer number (663888475).

Almost surely, 2^1327776949 is an apocalyptic number.

It is an amenable number.

1327776949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1327776949 is an equidigital number, since it uses as much as digits as its factorization.

1327776949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4000752, while the sum is 55.

The square root of 1327776949 is about 36438.6738095667. The cubic root of 1327776949 is about 1099.1113895117. Note that the first 3 decimals are identical.

The spelling of 1327776949 in words is "one billion, three hundred twenty-seven million, seven hundred seventy-six thousand, nine hundred forty-nine".