2111442988 has 6 divisors (see below), whose sum is σ = 3695025236. Its totient is φ = 1055721492.

The previous prime is 2111442979. The next prime is 2111442989. The reversal of 2111442988 is 8892441112.

It is a self number, because there is not a number n which added to its sum of digits gives 2111442988.

It is not an unprimeable number, because it can be changed into a prime (2111442989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263930370 + ... + 263930377.

Almost surely, 2^2111442988 is an apocalyptic number.

It is an amenable number.

2111442988 is a deficient number, since it is larger than the sum of its proper divisors (1583582248).

2111442988 is a wasteful number, since it uses less digits than its factorization.

2111442988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527860751 (or 527860749 counting only the distinct ones).

The product of its digits is 36864, while the sum is 40.

The square root of 2111442988 is about 45950.4405637204. The cubic root of 2111442988 is about 1282.9009294603.

The spelling of 2111442988 in words is "two billion, one hundred eleven million, four hundred forty-two thousand, nine hundred eighty-eight".