1287533612 has 12 divisors (see below), whose sum is σ = 2259569256. Its totient is φ = 641942400.

The previous prime is 1287533603. The next prime is 1287533623. The reversal of 1287533612 is 2163357821.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454514 + ... + 457337.

It is an arithmetic number, because the mean of its divisors is an integer number (188297438).

Almost surely, 2^1287533612 is an apocalyptic number.

It is an amenable number.

1287533612 is a deficient number, since it is larger than the sum of its proper divisors (972035644).

1287533612 is a wasteful number, since it uses less digits than its factorization.

1287533612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912208 (or 912206 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 1287533612 is about 35882.2186047630. The cubic root of 1287533612 is about 1087.8930237868.

The spelling of 1287533612 in words is "one billion, two hundred eighty-seven million, five hundred thirty-three thousand, six hundred twelve".