2091724216 has 8 divisors (see below), whose sum is σ = 3921982920. Its totient is φ = 1045862104.

The previous prime is 2091724177. The next prime is 2091724247. The reversal of 2091724216 is 6124271902.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130732756 + ... + 130732771.

It is an arithmetic number, because the mean of its divisors is an integer number (490247865).

Almost surely, 2^2091724216 is an apocalyptic number.

It is an amenable number.

2091724216 is a deficient number, since it is larger than the sum of its proper divisors (1830258704).

2091724216 is a wasteful number, since it uses less digits than its factorization.

2091724216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261465533 (or 261465529 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 2091724216 is about 45735.3716066679. The cubic root of 2091724216 is about 1278.8947604535.

The spelling of 2091724216 in words is "two billion, ninety-one million, seven hundred twenty-four thousand, two hundred sixteen".