1264338444 has 12 divisors (see below), whose sum is σ = 2950123064. Its totient is φ = 421446144.

The previous prime is 1264338437. The next prime is 1264338461. The reversal of 1264338444 is 4448334621.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×1264338444³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52680757 + ... + 52680780.

Almost surely, 2^1264338444 is an apocalyptic number.

It is an amenable number.

1264338444 is an abundant number, since it is smaller than the sum of its proper divisors (1685784620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1264338444 is a wasteful number, since it uses less digits than its factorization.

1264338444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105361544 (or 105361542 counting only the distinct ones).

The product of its digits is 221184, while the sum is 39.

The square root of 1264338444 is about 35557.5370913116. The cubic root of 1264338444 is about 1081.3205280646.

The spelling of 1264338444 in words is "one billion, two hundred sixty-four million, three hundred thirty-eight thousand, four hundred forty-four".