4791486121 has 4 divisors (see below), whose sum is σ = 4792105044. Its totient is φ = 4790867200.

The previous prime is 4791486083. The next prime is 4791486151. The reversal of 4791486121 is 1216841974.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1922384025 + 2869102096 = 43845^2 + 53564^2 .

It is a cyclic number.

It is not a de Polignac number, because 4791486121 - 2⁹ = 4791485609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4791486151) 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, 297700 + ... + 313381.

It is an arithmetic number, because the mean of its divisors is an integer number (1198026261).

Almost surely, 2^4791486121 is an apocalyptic number.

It is an amenable number.

4791486121 is a deficient number, since it is larger than the sum of its proper divisors (618923).

4791486121 is an equidigital number, since it uses as much as digits as its factorization.

4791486121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618922.

The product of its digits is 96768, while the sum is 43.

The square root of 4791486121 is about 69220.5614033865. The cubic root of 4791486121 is about 1685.8673953976.

The spelling of 4791486121 in words is "four billion, seven hundred ninety-one million, four hundred eighty-six thousand, one hundred twenty-one".