2103218787 has 16 divisors (see below), whose sum is σ = 2892805632. Its totient is φ = 1358223840.

The previous prime is 2103218773. The next prime is 2103218797. The reversal of 2103218787 is 7878123012.

It is not a de Polignac number, because 2103218787 - 2⁴ = 2103218771 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (2103218797) by changing a digit.

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, 16539 + ... + 66932.

It is an arithmetic number, because the mean of its divisors is an integer number (180800352).

Almost surely, 2^2103218787 is an apocalyptic number.

2103218787 is a deficient number, since it is larger than the sum of its proper divisors (789586845).

2103218787 is a wasteful number, since it uses less digits than its factorization.

2103218787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83738.

The product of its (nonzero) digits is 37632, while the sum is 39.

The square root of 2103218787 is about 45860.8633477391. The cubic root of 2103218787 is about 1281.2331026699.

The spelling of 2103218787 in words is "two billion, one hundred three million, two hundred eighteen thousand, seven hundred eighty-seven".