2118119787 has 20 divisors (see below), whose sum is σ = 3616120816. Its totient is φ = 1210353840.

The previous prime is 2118119779. The next prime is 2118119789. The reversal of 2118119787 is 7879118112.

It is not a de Polignac number, because 2118119787 - 2³ = 2118119779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2118119789) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1867264 + ... + 1868397.

Almost surely, 2^2118119787 is an apocalyptic number.

2118119787 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2118119787 is a deficient number, since it is larger than the sum of its proper divisors (1498001029).

2118119787 is an equidigital number, since it uses as much as digits as its factorization.

2118119787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3735680 (or 3735671 counting only the distinct ones).

The product of its digits is 56448, while the sum is 45.

The square root of 2118119787 is about 46023.0353953322. The cubic root of 2118119787 is about 1284.2517684740.

The spelling of 2118119787 in words is "two billion, one hundred eighteen million, one hundred nineteen thousand, seven hundred eighty-seven".