2138227566 has 8 divisors (see below), whose sum is σ = 4276455144. Its totient is φ = 712742520.

The previous prime is 2138227543. The next prime is 2138227579. The reversal of 2138227566 is 6657228312.

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

2138227566 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178185625 + ... + 178185636.

It is an arithmetic number, because the mean of its divisors is an integer number (534556893).

Almost surely, 2^2138227566 is an apocalyptic number.

2138227566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2138227566 is a wasteful number, since it uses less digits than its factorization.

2138227566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356371266.

The product of its digits is 241920, while the sum is 42.

The square root of 2138227566 is about 46240.9728055109. The cubic root of 2138227566 is about 1288.3028712891.

The spelling of 2138227566 in words is "two billion, one hundred thirty-eight million, two hundred twenty-seven thousand, five hundred sixty-six".