1264075988 has 24 divisors (see below), whose sum is σ = 2586948672. Its totient is φ = 529147584.

The previous prime is 1264075979. The next prime is 1264076111. The reversal of 1264075988 is 8895704621.

It is a super-2 number, since 2×1264075988² = 3195776206876352288, which contains 22 as substring.

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 in 7 ways as a sum of consecutive naturals, for example, 523745 + ... + 526152.

It is an arithmetic number, because the mean of its divisors is an integer number (107789528).

Almost surely, 2^1264075988 is an apocalyptic number.

It is an amenable number.

1264075988 is an abundant number, since it is smaller than the sum of its proper divisors (1322872684).

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

1264075988 is a wasteful number, since it uses less digits than its factorization.

1264075988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049951 (or 1049949 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 50.

The square root of 1264075988 is about 35553.8463179443. The cubic root of 1264075988 is about 1081.2457013963.

The spelling of 1264075988 in words is "one billion, two hundred sixty-four million, seventy-five thousand, nine hundred eighty-eight".