2166886612 has 48 divisors (see below), whose sum is σ = 4298857920. Its totient is φ = 946668800.

The previous prime is 2166886571. The next prime is 2166886619.

2166886612 is nontrivially palindromic in base 10.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166886619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285912 + ... + 293392.

It is an arithmetic number, because the mean of its divisors is an integer number (89559540).

Almost surely, 2^2166886612 is an apocalyptic number.

2166886612 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2166886612 is a deficient number, since it is larger than the sum of its proper divisors (2131971308).

2166886612 is a wasteful number, since it uses less digits than its factorization.

2166886612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7752 (or 7750 counting only the distinct ones).

The product of its digits is 331776, while the sum is 46.

The square root of 2166886612 is about 46549.8293444777. The cubic root of 2166886612 is about 1294.0331303076.

The spelling of 2166886612 in words is "two billion, one hundred sixty-six million, eight hundred eighty-six thousand, six hundred twelve".