1264334144 has 14 divisors (see below), whose sum is σ = 2508913194. Its totient is φ = 632167040.

The previous prime is 1264334111. The next prime is 1264334171. The reversal of 1264334144 is 4414334621.

It can be written as a sum of positive squares in only one way, i.e., 1255993600 + 8340544 = 35440^2 + 2888^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 1264334144.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 9877547 + ... + 9877674.

Almost surely, 2^1264334144 is an apocalyptic number.

It is an amenable number.

1264334144 is a deficient number, since it is larger than the sum of its proper divisors (1244579050).

1264334144 is an equidigital number, since it uses as much as digits as its factorization.

1264334144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19755233 (or 19755223 counting only the distinct ones).

The product of its digits is 27648, while the sum is 32.

The square root of 1264334144 is about 35557.4766258800. The cubic root of 1264334144 is about 1081.3193022104.

Adding to 1264334144 its reverse (4414334621), we get a palindrome (5678668765).

The spelling of 1264334144 in words is "one billion, two hundred sixty-four million, three hundred thirty-four thousand, one hundred forty-four".