2133194940 has 144 divisors (see below), whose sum is σ = 6927298560. Its totient is φ = 550463040.

The previous prime is 2133194927. The next prime is 2133194941. The reversal of 2133194940 is 494913312.

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

It is a junction number, because it is equal to n+sod(n) for n = 2133194895 and 2133194904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2133194941) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 143581 + ... + 157739.

It is an arithmetic number, because the mean of its divisors is an integer number (48106240).

Almost surely, 2^2133194940 is an apocalyptic number.

2133194940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2133194940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3463649280).

2133194940 is an abundant number, since it is smaller than the sum of its proper divisors (4794103620).

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

2133194940 is a wasteful number, since it uses less digits than its factorization.

2133194940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14214 (or 14200 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 2133194940 is about 46186.5233590925. The cubic root of 2133194940 is about 1287.2913419359.

The spelling of 2133194940 in words is "two billion, one hundred thirty-three million, one hundred ninety-four thousand, nine hundred forty".