2318791881 has 8 divisors (see below), whose sum is σ = 3533397184. Its totient is φ = 1325023920.

The previous prime is 2318791879. The next prime is 2318791903. The reversal of 2318791881 is 1881978132.

It is a happy number.

2318791881 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2318791881 - 2¹ = 2318791879 is a prime.

It is a super-2 number, since 2×2318791881² = 10753591574783036322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2318791881.

It is not an unprimeable number, because it can be changed into a prime (2318791861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55209310 + ... + 55209351.

It is an arithmetic number, because the mean of its divisors is an integer number (441674648).

Almost surely, 2^2318791881 is an apocalyptic number.

2318791881 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2318791881 is a deficient number, since it is larger than the sum of its proper divisors (1214605303).

2318791881 is a wasteful number, since it uses less digits than its factorization.

2318791881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110418671.

The product of its digits is 193536, while the sum is 48.

The square root of 2318791881 is about 48153.8355793181. The cubic root of 2318791881 is about 1323.5913604063.

The spelling of 2318791881 in words is "two billion, three hundred eighteen million, seven hundred ninety-one thousand, eight hundred eighty-one".