1313775528 has 32 divisors (see below), whose sum is σ = 3537088800. Its totient is φ = 404238528.

The previous prime is 1313775509. The next prime is 1313775557. The reversal of 1313775528 is 8255773131.

It is a happy number.

It is a super-2 number, since 2×1313775528² = 3452012275943357568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1313775528.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2105098 + ... + 2105721.

It is an arithmetic number, because the mean of its divisors is an integer number (110534025).

Almost surely, 2^1313775528 is an apocalyptic number.

It is an amenable number.

1313775528 is an abundant number, since it is smaller than the sum of its proper divisors (2223313272).

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

1313775528 is a wasteful number, since it uses less digits than its factorization.

1313775528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4210841 (or 4210837 counting only the distinct ones).

The product of its digits is 176400, while the sum is 42.

The square root of 1313775528 is about 36246.0415493885. The cubic root of 1313775528 is about 1095.2343494578.

The spelling of 1313775528 in words is "one billion, three hundred thirteen million, seven hundred seventy-five thousand, five hundred twenty-eight".