1264784473 has 4 divisors (see below), whose sum is σ = 1264999680. Its totient is φ = 1264569268.

The previous prime is 1264784471. The next prime is 1264784509. The reversal of 1264784473 is 3744874621.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3744874621 = 263 ⋅14239067.

It is a cyclic number.

It is not a de Polignac number, because 1264784473 - 2¹ = 1264784471 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1264784471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98533 + ... + 110626.

It is an arithmetic number, because the mean of its divisors is an integer number (316249920).

Almost surely, 2^1264784473 is an apocalyptic number.

It is an amenable number.

1264784473 is a deficient number, since it is larger than the sum of its proper divisors (215207).

1264784473 is an equidigital number, since it uses as much as digits as its factorization.

1264784473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215206.

The product of its digits is 903168, while the sum is 46.

The square root of 1264784473 is about 35563.8084715347. The cubic root of 1264784473 is about 1081.4476679699.

The spelling of 1264784473 in words is "one billion, two hundred sixty-four million, seven hundred eighty-four thousand, four hundred seventy-three".