2111594987 has 2 divisors, whose sum is σ = 2111594988. Its totient is φ = 2111594986.

The previous prime is 2111594983. The next prime is 2111595053. The reversal of 2111594987 is 7894951112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2111594987 - 2² = 2111594983 is a prime.

It is not a weakly prime, because it can be changed into another prime (2111594983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055797493 + 1055797494.

It is an arithmetic number, because the mean of its divisors is an integer number (1055797494).

Almost surely, 2^2111594987 is an apocalyptic number.

2111594987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111594987 is an equidigital number, since it uses as much as digits as its factorization.

2111594987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 47.

The square root of 2111594987 is about 45952.0944789245. The cubic root of 2111594987 is about 1282.9317133019.

The spelling of 2111594987 in words is "two billion, one hundred eleven million, five hundred ninety-four thousand, nine hundred eighty-seven".