1264485091 has 2 divisors, whose sum is σ = 1264485092. Its totient is φ = 1264485090.

The previous prime is 1264485067. The next prime is 1264485119. The reversal of 1264485091 is 1905844621.

It is a weak prime.

It is an emirp because it is prime and its reverse (1905844621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1264485091 - 2⁹ = 1264484579 is a prime.

It is a super-2 number, since 2×1264485091² = 3197845090722556562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1264485011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632242545 + 632242546.

It is an arithmetic number, because the mean of its divisors is an integer number (632242546).

Almost surely, 2^1264485091 is an apocalyptic number.

1264485091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264485091 is an equidigital number, since it uses as much as digits as its factorization.

1264485091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 1264485091 is about 35559.5991400353. The cubic root of 1264485091 is about 1081.3623328735.

The spelling of 1264485091 in words is "one billion, two hundred sixty-four million, four hundred eighty-five thousand, ninety-one".