4978788149 has 2 divisors, whose sum is σ = 4978788150. Its totient is φ = 4978788148.

The previous prime is 4978788109. The next prime is 4978788151. The reversal of 4978788149 is 9418878794.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4260172900 + 718615249 = 65270^2 + 26807^2 .

It is a cyclic number.

It is not a de Polignac number, because 4978788149 - 2¹² = 4978784053 is a prime.

Together with 4978788151, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4978788109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2489394074 + 2489394075.

It is an arithmetic number, because the mean of its divisors is an integer number (2489394075).

Almost surely, 2^4978788149 is an apocalyptic number.

It is an amenable number.

4978788149 is a deficient number, since it is larger than the sum of its proper divisors (1).

4978788149 is an equidigital number, since it uses as much as digits as its factorization.

4978788149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32514048, while the sum is 65.

The square root of 4978788149 is about 70560.5282647459. The cubic root of 4978788149 is about 1707.5544020790.

The spelling of 4978788149 in words is "four billion, nine hundred seventy-eight million, seven hundred eighty-eight thousand, one hundred forty-nine".