2111799166 has 4 divisors (see below), whose sum is σ = 3167698752. Its totient is φ = 1055899582.

The previous prime is 2111799127. The next prime is 2111799167. The reversal of 2111799166 is 6619971112.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111799167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527949790 + ... + 527949793.

It is an arithmetic number, because the mean of its divisors is an integer number (791924688).

Almost surely, 2^2111799166 is an apocalyptic number.

2111799166 is a deficient number, since it is larger than the sum of its proper divisors (1055899586).

2111799166 is a wasteful number, since it uses less digits than its factorization.

2111799166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055899585.

The product of its digits is 40824, while the sum is 43.

The square root of 2111799166 is about 45954.3160758595. The cubic root of 2111799166 is about 1282.9730626568.

The spelling of 2111799166 in words is "two billion, one hundred eleven million, seven hundred ninety-nine thousand, one hundred sixty-six".