1264031533 has 4 divisors (see below), whose sum is σ = 1268696128. Its totient is φ = 1259366940.

The previous prime is 1264031513. The next prime is 1264031537. The reversal of 1264031533 is 3351304621.

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 a de Polignac number, because none of the positive numbers 2^k-1264031533 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 (1264031537) 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, 2331891 + ... + 2332432.

It is an arithmetic number, because the mean of its divisors is an integer number (317174032).

Almost surely, 2^1264031533 is an apocalyptic number.

It is an amenable number.

1264031533 is a deficient number, since it is larger than the sum of its proper divisors (4664595).

1264031533 is an equidigital number, since it uses as much as digits as its factorization.

1264031533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4664594.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 1264031533 is about 35553.2211339563. The cubic root of 1264031533 is about 1081.2330261717.

The spelling of 1264031533 in words is "one billion, two hundred sixty-four million, thirty-one thousand, five hundred thirty-three".