2181461113 has 8 divisors (see below), whose sum is σ = 2430275400. Its totient is φ = 1944219648.

The previous prime is 2181461101. The next prime is 2181461123. The reversal of 2181461113 is 3111641812.

It can be written as a sum of positive squares in 4 ways, for example, as 205836409 + 1975624704 = 14347^2 + 44448^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2181461113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2181461123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2892808 + ... + 2893561.

It is an arithmetic number, because the mean of its divisors is an integer number (303784425).

Almost surely, 2^2181461113 is an apocalyptic number.

It is an amenable number.

2181461113 is a deficient number, since it is larger than the sum of its proper divisors (248814287).

2181461113 is a wasteful number, since it uses less digits than its factorization.

2181461113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5786411.

The product of its digits is 1152, while the sum is 28.

The square root of 2181461113 is about 46706.1142999501. The cubic root of 2181461113 is about 1296.9278765322.

The spelling of 2181461113 in words is "two billion, one hundred eighty-one million, four hundred sixty-one thousand, one hundred thirteen".