4647982091 has 4 divisors (see below), whose sum is σ = 4648521384. Its totient is φ = 4647442800.

The previous prime is 4647982081. The next prime is 4647982099. The reversal of 4647982091 is 1902897464.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4647982091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4647982099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256505 + ... + 274026.

It is an arithmetic number, because the mean of its divisors is an integer number (1162130346).

Almost surely, 2^4647982091 is an apocalyptic number.

4647982091 is a deficient number, since it is larger than the sum of its proper divisors (539293).

4647982091 is an equidigital number, since it uses as much as digits as its factorization.

4647982091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539292.

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 4647982091 is about 68176.1108527026. The cubic root of 4647982091 is about 1668.8660583601.

The spelling of 4647982091 in words is "four billion, six hundred forty-seven million, nine hundred eighty-two thousand, ninety-one".