2291988347 has 8 divisors (see below), whose sum is σ = 2567928432. Its totient is φ = 2027311200.

The previous prime is 2291988343. The next prime is 2291988359. The reversal of 2291988347 is 7438891922.

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 2291988347 - 2² = 2291988343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2291988343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2815304 + ... + 2816117.

It is an arithmetic number, because the mean of its divisors is an integer number (320991054).

Almost surely, 2^2291988347 is an apocalyptic number.

2291988347 is a deficient number, since it is larger than the sum of its proper divisors (275940085).

2291988347 is a wasteful number, since it uses less digits than its factorization.

2291988347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5631469.

The product of its digits is 1741824, while the sum is 53.

The square root of 2291988347 is about 47874.7151114239. The cubic root of 2291988347 is about 1318.4716675853.

The spelling of 2291988347 in words is "two billion, two hundred ninety-one million, nine hundred eighty-eight thousand, three hundred forty-seven".