2138286866 has 8 divisors (see below), whose sum is σ = 3376242480. Its totient is φ = 1012872708.

The previous prime is 2138286853. The next prime is 2138286883. The reversal of 2138286866 is 6686828312.

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

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 3 ways as a sum of consecutive naturals, for example, 28135316 + ... + 28135391.

It is an arithmetic number, because the mean of its divisors is an integer number (422030310).

Almost surely, 2^2138286866 is an apocalyptic number.

2138286866 is a deficient number, since it is larger than the sum of its proper divisors (1237955614).

2138286866 is a wasteful number, since it uses less digits than its factorization.

2138286866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56270728.

The product of its digits is 1327104, while the sum is 50.

The square root of 2138286866 is about 46241.6140072987. The cubic root of 2138286866 is about 1288.3147807876.

The spelling of 2138286866 in words is "two billion, one hundred thirty-eight million, two hundred eighty-six thousand, eight hundred sixty-six".