1187285516 has 12 divisors (see below), whose sum is σ = 2085836088. Its totient is φ = 591332352.

The previous prime is 1187285479. The next prime is 1187285521. The reversal of 1187285516 is 6155827811.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576446 + ... + 578501.

It is an arithmetic number, because the mean of its divisors is an integer number (173819674).

Almost surely, 2^1187285516 is an apocalyptic number.

It is an amenable number.

1187285516 is a deficient number, since it is larger than the sum of its proper divisors (898550572).

1187285516 is a wasteful number, since it uses less digits than its factorization.

1187285516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155208 (or 1155206 counting only the distinct ones).

The product of its digits is 134400, while the sum is 44.

The square root of 1187285516 is about 34457.0096787287. The cubic root of 1187285516 is about 1058.8921366890.

The spelling of 1187285516 in words is "one billion, one hundred eighty-seven million, two hundred eighty-five thousand, five hundred sixteen".