2111129938 has 32 divisors (see below), whose sum is σ = 3549355200. Its totient is φ = 935875584.

The previous prime is 2111129897. The next prime is 2111129941. The reversal of 2111129938 is 8399211112.

It is a junction number, because it is equal to n+sod(n) for n = 2111129897 and 2111129906.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 106506 + ... + 124762.

It is an arithmetic number, because the mean of its divisors is an integer number (110917350).

Almost surely, 2^2111129938 is an apocalyptic number.

2111129938 is a deficient number, since it is larger than the sum of its proper divisors (1438225262).

2111129938 is a wasteful number, since it uses less digits than its factorization.

2111129938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18474.

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

The square root of 2111129938 is about 45947.0340500886. The cubic root of 2111129938 is about 1282.8375238513.

The spelling of 2111129938 in words is "two billion, one hundred eleven million, one hundred twenty-nine thousand, nine hundred thirty-eight".