2181159042 has 32 divisors (see below), whose sum is σ = 4381412352. Its totient is φ = 723879504.

The previous prime is 2181159031. The next prime is 2181159059. The reversal of 2181159042 is 2409511812.

It is a junction number, because it is equal to n+sod(n) for n = 2181158994 and 2181159012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2404353 + ... + 2405259.

It is an arithmetic number, because the mean of its divisors is an integer number (136919136).

Almost surely, 2^2181159042 is an apocalyptic number.

2181159042 is an abundant number, since it is smaller than the sum of its proper divisors (2200253310).

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

2181159042 is a wasteful number, since it uses less digits than its factorization.

2181159042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2222.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 2181159042 is about 46702.8804464992. The cubic root of 2181159042 is about 1296.8680110927.

The spelling of 2181159042 in words is "two billion, one hundred eighty-one million, one hundred fifty-nine thousand, forty-two".