1986088166 has 8 divisors (see below), whose sum is σ = 2980205760. Its totient is φ = 992686248.

The previous prime is 1986088163. The next prime is 1986088193. The reversal of 1986088166 is 6618806891.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1986088163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171926 + ... + 183113.

It is an arithmetic number, because the mean of its divisors is an integer number (372525720).

Almost surely, 2^1986088166 is an apocalyptic number.

1986088166 is a deficient number, since it is larger than the sum of its proper divisors (994117594).

1986088166 is a wasteful number, since it uses less digits than its factorization.

1986088166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357838.

The product of its (nonzero) digits is 995328, while the sum is 53.

The square root of 1986088166 is about 44565.5490934421. The cubic root of 1986088166 is about 1256.9929480694.

The spelling of 1986088166 in words is "one billion, nine hundred eighty-six million, eighty-eight thousand, one hundred sixty-six".