1285527916 has 12 divisors (see below), whose sum is σ = 2368077880. Its totient is φ = 608934240.

The previous prime is 1285527907. The next prime is 1285527941. The reversal of 1285527916 is 6197255821.

It is a super-3 number, since 3×1285527916³ (a number of 28 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 8457345 + ... + 8457496.

Almost surely, 2^1285527916 is an apocalyptic number.

It is an amenable number.

1285527916 is a deficient number, since it is larger than the sum of its proper divisors (1082549964).

1285527916 is a wasteful number, since it uses less digits than its factorization.

1285527916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16914864 (or 16914862 counting only the distinct ones).

The product of its digits is 302400, while the sum is 46.

The square root of 1285527916 is about 35854.2593843465. The cubic root of 1285527916 is about 1087.3278303386.

The spelling of 1285527916 in words is "one billion, two hundred eighty-five million, five hundred twenty-seven thousand, nine hundred sixteen".