1264004453 has 4 divisors (see below), whose sum is σ = 1268069088. Its totient is φ = 1259939820.

The previous prime is 1264004449. The next prime is 1264004477. The reversal of 1264004453 is 3544004621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1264004453 - 2² = 1264004449 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264004153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2031851 + ... + 2032472.

It is an arithmetic number, because the mean of its divisors is an integer number (317017272).

Almost surely, 2^1264004453 is an apocalyptic number.

It is an amenable number.

1264004453 is a deficient number, since it is larger than the sum of its proper divisors (4064635).

1264004453 is an equidigital number, since it uses as much as digits as its factorization.

1264004453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4064634.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 1264004453 is about 35552.8402944125. The cubic root of 1264004453 is about 1081.2253048454.

The spelling of 1264004453 in words is "one billion, two hundred sixty-four million, four thousand, four hundred fifty-three".