2181196933 has 8 divisors (see below), whose sum is σ = 2207600640. Its totient is φ = 2154937680.

The previous prime is 2181196867. The next prime is 2181196937. The reversal of 2181196933 is 3396911812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2181196933 - 2²¹ = 2179099781 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2181196933.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2181196937) 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, 5578 + ... + 66283.

It is an arithmetic number, because the mean of its divisors is an integer number (275950080).

Almost surely, 2^2181196933 is an apocalyptic number.

It is an amenable number.

2181196933 is a deficient number, since it is larger than the sum of its proper divisors (26403707).

2181196933 is a wasteful number, since it uses less digits than its factorization.

2181196933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72227.

The product of its digits is 69984, while the sum is 43.

The square root of 2181196933 is about 46703.2861049413. The cubic root of 2181196933 is about 1296.8755207608.

The spelling of 2181196933 in words is "two billion, one hundred eighty-one million, one hundred ninety-six thousand, nine hundred thirty-three".