2181296412 has 24 divisors (see below), whose sum is σ = 5655213200. Its totient is φ = 727098768.

The previous prime is 2181296347. The next prime is 2181296437. The reversal of 2181296412 is 2146921812.

2181296412 is a `hidden beast` number, since 2 + 1 + 8 + 1 + 2 + 9 + 641 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10098487 + ... + 10098702.

Almost surely, 2^2181296412 is an apocalyptic number.

It is an amenable number.

2181296412 is an abundant number, since it is smaller than the sum of its proper divisors (3473916788).

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

2181296412 is a wasteful number, since it uses less digits than its factorization.

2181296412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20197202 (or 20197194 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 2181296412 is about 46704.3511035107. The cubic root of 2181296412 is about 1296.8952362233.

The spelling of 2181296412 in words is "two billion, one hundred eighty-one million, two hundred ninety-six thousand, four hundred twelve".