2181119967 has 20 divisors (see below), whose sum is σ = 3508849960. Its totient is φ = 1342227024.

The previous prime is 2181119959. The next prime is 2181119977. The reversal of 2181119967 is 7699111812.

It is a happy number.

2181119967 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2181119967 - 2³ = 2181119959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2181119977) 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, 1034617 + ... + 1036722.

It is an arithmetic number, because the mean of its divisors is an integer number (175442498).

Almost surely, 2^2181119967 is an apocalyptic number.

2181119967 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2181119967 is a deficient number, since it is larger than the sum of its proper divisors (1327729993).

2181119967 is a wasteful number, since it uses less digits than its factorization.

2181119967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071364 (or 2071355 counting only the distinct ones).

The product of its digits is 54432, while the sum is 45.

The square root of 2181119967 is about 46702.4621085441. The cubic root of 2181119967 is about 1296.8602666750.

The spelling of 2181119967 in words is "two billion, one hundred eighty-one million, one hundred nineteen thousand, nine hundred sixty-seven".