2111442987 has 16 divisors (see below), whose sum is σ = 2938722048. Its totient is φ = 1345940640.

The previous prime is 2111442979. The next prime is 2111442989. The reversal of 2111442987 is 7892441112.

2111442987 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2111442987 - 2³ = 2111442979 is a prime.

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 in 15 ways as a sum of consecutive naturals, for example, 375537 + ... + 381117.

It is an arithmetic number, because the mean of its divisors is an integer number (183670128).

Almost surely, 2^2111442987 is an apocalyptic number.

2111442987 is a deficient number, since it is larger than the sum of its proper divisors (827279061).

2111442987 is a wasteful number, since it uses less digits than its factorization.

2111442987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11090.

The product of its digits is 32256, while the sum is 39.

The square root of 2111442987 is about 45950.4405528391. The cubic root of 2111442987 is about 1282.9009292578.

The spelling of 2111442987 in words is "two billion, one hundred eleven million, four hundred forty-two thousand, nine hundred eighty-seven".