2163924081 has 12 divisors (see below), whose sum is σ = 3409819920. Its totient is φ = 1311469080.

The previous prime is 2163924071. The next prime is 2163924107. The reversal of 2163924081 is 1804293612.

2163924081 is a `hidden beast` number, since 2 + 163 + 92 + 408 + 1 = 666.

2163924081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2163924081 - 2²² = 2159729777 is a prime.

It is a super-2 number, since 2×2163924081² = 9365134856663389122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2163924071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10928811 + ... + 10929008.

It is an arithmetic number, because the mean of its divisors is an integer number (284151660).

Almost surely, 2^2163924081 is an apocalyptic number.

It is an amenable number.

2163924081 is a deficient number, since it is larger than the sum of its proper divisors (1245895839).

2163924081 is a wasteful number, since it uses less digits than its factorization.

2163924081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21857836 (or 21857833 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 2163924081 is about 46517.9973881078. The cubic root of 2163924081 is about 1293.4431345575.

The spelling of 2163924081 in words is "two billion, one hundred sixty-three million, nine hundred twenty-four thousand, eighty-one".