9001156986 has 24 divisors (see below), whose sum is σ = 19622160480. Its totient is φ = 2981977416.

The previous prime is 9001156979. The next prime is 9001156999. The reversal of 9001156986 is 6896511009.

9001156986 is a `hidden beast` number, since 9 + 0 + 0 + 1 + 1 + 569 + 86 = 666.

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 11 ways as a sum of consecutive naturals, for example, 1531006 + ... + 1536873.

It is an arithmetic number, because the mean of its divisors is an integer number (817590020).

Almost surely, 2^9001156986 is an apocalyptic number.

9001156986 is an abundant number, since it is smaller than the sum of its proper divisors (10621003494).

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

9001156986 is a wasteful number, since it uses less digits than its factorization.

9001156986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3068050 (or 3068047 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 9001156986 is about 94874.4274607231. The cubic root of 9001156986 is about 2080.1729535979.

The spelling of 9001156986 in words is "nine billion, one million, one hundred fifty-six thousand, nine hundred eighty-six".