2111439166 has 4 divisors (see below), whose sum is σ = 3167158752. Its totient is φ = 1055719582.

The previous prime is 2111439157. The next prime is 2111439167. The reversal of 2111439166 is 6619341112.

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 (2111439167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527859790 + ... + 527859793.

It is an arithmetic number, because the mean of its divisors is an integer number (791789688).

Almost surely, 2^2111439166 is an apocalyptic number.

2111439166 is a deficient number, since it is larger than the sum of its proper divisors (1055719586).

2111439166 is a wasteful number, since it uses less digits than its factorization.

2111439166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055719585.

The product of its digits is 7776, while the sum is 34.

The square root of 2111439166 is about 45950.3989754170. The cubic root of 2111439166 is about 1282.9001553846.

The spelling of 2111439166 in words is "two billion, one hundred eleven million, four hundred thirty-nine thousand, one hundred sixty-six".