1264338461 has 2 divisors, whose sum is σ = 1264338462. Its totient is φ = 1264338460.

The previous prime is 1264338437. The next prime is 1264338473. The reversal of 1264338461 is 1648334621.

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., 1245031225 + 19307236 = 35285^2 + 4394^2 .

It is an emirp because it is prime and its reverse (1648334621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1264338461 - 2²² = 1260144157 is a prime.

It is a super-3 number, since 3×1264338461³ (a number of 28 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1264338401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632169230 + 632169231.

It is an arithmetic number, because the mean of its divisors is an integer number (632169231).

Almost surely, 2^1264338461 is an apocalyptic number.

It is an amenable number.

1264338461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264338461 is an equidigital number, since it uses as much as digits as its factorization.

1264338461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 38.

The square root of 1264338461 is about 35557.5373303608. The cubic root of 1264338461 is about 1081.3205329110.

The spelling of 1264338461 in words is "one billion, two hundred sixty-four million, three hundred thirty-eight thousand, four hundred sixty-one".