2116331878 has 8 divisors (see below), whose sum is σ = 3175862040. Its totient is φ = 1057711200.

The previous prime is 2116331873. The next prime is 2116331879. The reversal of 2116331878 is 8781336112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2116331878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2116331873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221523 + ... + 230878.

It is an arithmetic number, because the mean of its divisors is an integer number (396982755).

Almost surely, 2^2116331878 is an apocalyptic number.

2116331878 is a deficient number, since it is larger than the sum of its proper divisors (1059530162).

2116331878 is a wasteful number, since it uses less digits than its factorization.

2116331878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454742.

The product of its digits is 48384, while the sum is 40.

The square root of 2116331878 is about 46003.6072281294. The cubic root of 2116331878 is about 1283.8903202898.

The spelling of 2116331878 in words is "two billion, one hundred sixteen million, three hundred thirty-one thousand, eight hundred seventy-eight".