2111904903 has 24 divisors (see below), whose sum is σ = 2943952128. Its totient is φ = 1346510368.

The previous prime is 2111904889. The next prime is 2111904947. The reversal of 2111904903 is 3094091112.

It is not a de Polignac number, because 2111904903 - 2⁹ = 2111904391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111904503) 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 in 23 ways as a sum of consecutive naturals, for example, 266050 + ... + 273872.

It is an arithmetic number, because the mean of its divisors is an integer number (122664672).

Almost surely, 2^2111904903 is an apocalyptic number.

2111904903 is a deficient number, since it is larger than the sum of its proper divisors (832047225).

2111904903 is a wasteful number, since it uses less digits than its factorization.

2111904903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7991 (or 7962 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 2111904903 is about 45955.4665192292. The cubic root of 2111904903 is about 1282.9944749611.

The spelling of 2111904903 in words is "two billion, one hundred eleven million, nine hundred four thousand, nine hundred three".