3888781166 has 16 divisors (see below), whose sum is σ = 6109267968. Its totient is φ = 1852983000.

The previous prime is 3888781159. The next prime is 3888781213. The reversal of 3888781166 is 6611878883.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143510 + ... + 168441.

It is an arithmetic number, because the mean of its divisors is an integer number (381829248).

Almost surely, 2^3888781166 is an apocalyptic number.

3888781166 is a deficient number, since it is larger than the sum of its proper divisors (2220486802).

3888781166 is a wasteful number, since it uses less digits than its factorization.

3888781166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312247.

The product of its digits is 3096576, while the sum is 56.

The square root of 3888781166 is about 62360.0927356591. The cubic root of 3888781166 is about 1572.5501398679.

The spelling of 3888781166 in words is "three billion, eight hundred eighty-eight million, seven hundred eighty-one thousand, one hundred sixty-six".