2181477234 has 16 divisors (see below), whose sum is σ = 4364157888. Its totient is φ = 726958512.

The previous prime is 2181477211. The next prime is 2181477253. The reversal of 2181477234 is 4327741812.

It is a junction number, because it is equal to n+sod(n) for n = 2181477192 and 2181477201.

It is an unprimeable number.

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, 25657 + ... + 70860.

It is an arithmetic number, because the mean of its divisors is an integer number (272759868).

Almost surely, 2^2181477234 is an apocalyptic number.

2181477234 is an abundant number, since it is smaller than the sum of its proper divisors (2182680654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2181477234 is a wasteful number, since it uses less digits than its factorization.

2181477234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100289.

The product of its digits is 75264, while the sum is 39.

The square root of 2181477234 is about 46706.2868787490. The cubic root of 2181477234 is about 1296.9310712905.

The spelling of 2181477234 in words is "two billion, one hundred eighty-one million, four hundred seventy-seven thousand, two hundred thirty-four".