2163434140 has 48 divisors (see below), whose sum is σ = 5243684544. Its totient is φ = 734400000.

The previous prime is 2163434131. The next prime is 2163434159. The reversal of 2163434140 is 414343612.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 2163434099 and 2163434108.

It is a congruent number.

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, 62361 + ... + 90640.

It is an arithmetic number, because the mean of its divisors is an integer number (109243428).

Almost surely, 2^2163434140 is an apocalyptic number.

2163434140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2163434140 is an abundant number, since it is smaller than the sum of its proper divisors (3080250404).

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

2163434140 is a wasteful number, since it uses less digits than its factorization.

2163434140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153118 (or 153116 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 2163434140 is about 46512.7309454089. The cubic root of 2163434140 is about 1293.3455096514.

Adding to 2163434140 its reverse (414343612), we get a palindrome (2577777752).

The spelling of 2163434140 in words is "two billion, one hundred sixty-three million, four hundred thirty-four thousand, one hundred forty".