1282538916 has 18 divisors (see below), whose sum is σ = 3241973462. Its totient is φ = 427512960.

The previous prime is 1282538909. The next prime is 1282538963. The reversal of 1282538916 is 6198352821.

1282538916 is a `hidden beast` number, since 1 + 28 + 2 + 538 + 91 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 647498916 + 635040000 = 25446^2 + 25200^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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 5 ways as a sum of consecutive naturals, for example, 17813005 + ... + 17813076.

Almost surely, 2^1282538916 is an apocalyptic number.

It is an amenable number.

1282538916 is an abundant number, since it is smaller than the sum of its proper divisors (1959434546).

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

1282538916 is a wasteful number, since it uses less digits than its factorization.

1282538916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35626091 (or 35626086 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 1282538916 is about 35812.5524921081. The cubic root of 1282538916 is about 1086.4844556712.

The spelling of 1282538916 in words is "one billion, two hundred eighty-two million, five hundred thirty-eight thousand, nine hundred sixteen".