4778487323 has 2 divisors, whose sum is σ = 4778487324. Its totient is φ = 4778487322.

The previous prime is 4778487317. The next prime is 4778487361. The reversal of 4778487323 is 3237848774.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4778487323 is a prime.

It is not a weakly prime, because it can be changed into another prime (4778484323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2389243661 + 2389243662.

It is an arithmetic number, because the mean of its divisors is an integer number (2389243662).

Almost surely, 2^4778487323 is an apocalyptic number.

4778487323 is a deficient number, since it is larger than the sum of its proper divisors (1).

4778487323 is an equidigital number, since it uses as much as digits as its factorization.

4778487323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6322176, while the sum is 53.

The square root of 4778487323 is about 69126.6035835698. The cubic root of 4778487323 is about 1684.3414876998.

The spelling of 4778487323 in words is "four billion, seven hundred seventy-eight million, four hundred eighty-seven thousand, three hundred twenty-three".