11987163 has 32 divisors (see below), whose sum is σ = 18816000. Its totient is φ = 7527168.

The previous prime is 11987147. The next prime is 11987167. The reversal of 11987163 is 36178911.

It is not a de Polignac number, because 11987163 - 2⁴ = 11987147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11987167) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60138 + ... + 60336.

It is an arithmetic number, because the mean of its divisors is an integer number (588000).

Almost surely, 2^11987163 is an apocalyptic number.

11987163 is a deficient number, since it is larger than the sum of its proper divisors (6828837).

11987163 is a wasteful number, since it uses less digits than its factorization.

11987163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328 (or 322 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 11987163 is about 3462.2482579965. The cubic root of 11987163 is about 228.8611821788.

The spelling of 11987163 in words is "eleven million, nine hundred eighty-seven thousand, one hundred sixty-three".