2181406292 has 24 divisors (see below), whose sum is σ = 4180797600. Its totient is φ = 989737056.

The previous prime is 2181406291. The next prime is 2181406313. The reversal of 2181406292 is 2926041812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2181406291) 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, 352442 + ... + 358577.

It is an arithmetic number, because the mean of its divisors is an integer number (174199900).

Almost surely, 2^2181406292 is an apocalyptic number.

It is an amenable number.

2181406292 is a deficient number, since it is larger than the sum of its proper divisors (1999391308).

2181406292 is a wasteful number, since it uses less digits than its factorization.

2181406292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711095 (or 711093 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 2181406292 is about 46705.5274244923. The cubic root of 2181406292 is about 1296.9170123339.

The spelling of 2181406292 in words is "two billion, one hundred eighty-one million, four hundred six thousand, two hundred ninety-two".