1264487927 has 2 divisors, whose sum is σ = 1264487928. Its totient is φ = 1264487926.

The previous prime is 1264487911. The next prime is 1264487933. The reversal of 1264487927 is 7297844621.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (7297844621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1264487927 - 2⁴ = 1264487911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1264487947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632243963 + 632243964.

It is an arithmetic number, because the mean of its divisors is an integer number (632243964).

Almost surely, 2^1264487927 is an apocalyptic number.

1264487927 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264487927 is an equidigital number, since it uses as much as digits as its factorization.

1264487927 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1354752, while the sum is 50.

The square root of 1264487927 is about 35559.6390167279. The cubic root of 1264487927 is about 1081.3631413030.

The spelling of 1264487927 in words is "one billion, two hundred sixty-four million, four hundred eighty-seven thousand, nine hundred twenty-seven".