2291374208 has 24 divisors (see below), whose sum is σ = 4565926215. Its totient is φ = 1145416320.

The previous prime is 2291374201. The next prime is 2291374213. The reversal of 2291374208 is 8024731922.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 1145687104 + 1145687104 = 33848^2 + 33848^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=33848.

It is a super-2 number, since 2×2291374208² = 10500791522175254528, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2291374201) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 539453 + ... + 543683.

Almost surely, 2^2291374208 is an apocalyptic number.

It is an amenable number.

2291374208 is a deficient number, since it is larger than the sum of its proper divisors (2274552007).

2291374208 is an frugal number, since it uses more digits than its factorization.

2291374208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8476 (or 4233 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 2291374208 is about 47868.3006592045. The cubic root of 2291374208 is about 1318.3538954327.

The spelling of 2291374208 in words is "two billion, two hundred ninety-one million, three hundred seventy-four thousand, two hundred eight".