1264939327 has 2 divisors, whose sum is σ = 1264939328. Its totient is φ = 1264939326.

The previous prime is 1264939301. The next prime is 1264939343. The reversal of 1264939327 is 7239394621.

It is a strong prime.

It is an emirp because it is prime and its reverse (7239394621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1264939327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1264939397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632469663 + 632469664.

It is an arithmetic number, because the mean of its divisors is an integer number (632469664).

Almost surely, 2^1264939327 is an apocalyptic number.

1264939327 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264939327 is an equidigital number, since it uses as much as digits as its factorization.

1264939327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 46.

The square root of 1264939327 is about 35565.9855339340. The cubic root of 1264939327 is about 1081.4918018827.

The spelling of 1264939327 in words is "one billion, two hundred sixty-four million, nine hundred thirty-nine thousand, three hundred twenty-seven".