2111009986 has 8 divisors (see below), whose sum is σ = 3352780620. Its totient is φ = 993416448.

The previous prime is 2111009941. The next prime is 2111009987. The reversal of 2111009986 is 6899001112.

It can be written as a sum of positive squares in 2 ways, for example, as 1995855625 + 115154361 = 44675^2 + 10731^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2111009987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31044231 + ... + 31044298.

Almost surely, 2^2111009986 is an apocalyptic number.

2111009986 is a deficient number, since it is larger than the sum of its proper divisors (1241770634).

2111009986 is a wasteful number, since it uses less digits than its factorization.

2111009986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62088548.

The product of its (nonzero) digits is 7776, while the sum is 37.

The square root of 2111009986 is about 45945.7287024594. The cubic root of 2111009986 is about 1282.8132269351.

The spelling of 2111009986 in words is "two billion, one hundred eleven million, nine thousand, nine hundred eighty-six".