1264067995 has 4 divisors (see below), whose sum is σ = 1516881600. Its totient is φ = 1011254392.

The previous prime is 1264067983. The next prime is 1264068023. The reversal of 1264067995 is 5997604621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5997604621 = 6343 ⋅945547.

It is a cyclic number.

It is not a de Polignac number, because 1264067995 - 2¹⁹ = 1263543707 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126406795 + ... + 126406804.

It is an arithmetic number, because the mean of its divisors is an integer number (379220400).

Almost surely, 2^1264067995 is an apocalyptic number.

1264067995 is a deficient number, since it is larger than the sum of its proper divisors (252813605).

1264067995 is an equidigital number, since it uses as much as digits as its factorization.

1264067995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252813604.

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 1264067995 is about 35553.7339108004. The cubic root of 1264067995 is about 1081.2434224154.

The spelling of 1264067995 in words is "one billion, two hundred sixty-four million, sixty-seven thousand, nine hundred ninety-five".