2111937071 has 4 divisors (see below), whose sum is σ = 2113873944. Its totient is φ = 2110000200.

The previous prime is 2111937053. The next prime is 2111937089. The reversal of 2111937071 is 1707391112.

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

It is an interprime number because it is at equal distance from previous prime (2111937053) and next prime (2111937089).

It is a cyclic number.

It is not a de Polignac number, because 2111937071 - 2¹⁴ = 2111920687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111930071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 966800 + ... + 968981.

It is an arithmetic number, because the mean of its divisors is an integer number (528468486).

Almost surely, 2^2111937071 is an apocalyptic number.

2111937071 is a deficient number, since it is larger than the sum of its proper divisors (1936873).

2111937071 is a wasteful number, since it uses less digits than its factorization.

2111937071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1936872.

The product of its (nonzero) digits is 2646, while the sum is 32.

The square root of 2111937071 is about 45955.8165089034. The cubic root of 2111937071 is about 1283.0009890102. Note that the first 3 decimals are identical.

The spelling of 2111937071 in words is "two billion, one hundred eleven million, nine hundred thirty-seven thousand, seventy-one".