2138086466 has 4 divisors (see below), whose sum is σ = 3207129702. Its totient is φ = 1069043232.

The previous prime is 2138086459. The next prime is 2138086493. The reversal of 2138086466 is 6646808312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2131761241 + 6325225 = 46171^2 + 2515^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 534521615 + ... + 534521618.

Almost surely, 2^2138086466 is an apocalyptic number.

2138086466 is a deficient number, since it is larger than the sum of its proper divisors (1069043236).

2138086466 is a wasteful number, since it uses less digits than its factorization.

2138086466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069043235.

The product of its (nonzero) digits is 331776, while the sum is 44.

The square root of 2138086466 is about 46239.4470771440. The cubic root of 2138086466 is about 1288.2745326257.

The spelling of 2138086466 in words is "two billion, one hundred thirty-eight million, eighty-six thousand, four hundred sixty-six".