4778998837 has 2 divisors, whose sum is σ = 4778998838. Its totient is φ = 4778998836.

The previous prime is 4778998771. The next prime is 4778998867. The reversal of 4778998837 is 7388998774.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4067123076 + 711875761 = 63774^2 + 26681^2 .

It is a cyclic number.

It is not a de Polignac number, because 4778998837 - 2¹⁵ = 4778966069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4778998867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2389499418 + 2389499419.

It is an arithmetic number, because the mean of its divisors is an integer number (2389499419).

Almost surely, 2^4778998837 is an apocalyptic number.

It is an amenable number.

4778998837 is a deficient number, since it is larger than the sum of its proper divisors (1).

4778998837 is an equidigital number, since it uses as much as digits as its factorization.

4778998837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 170698752, while the sum is 70.

The square root of 4778998837 is about 69130.3033191668. The cubic root of 4778998837 is about 1684.4015857638.

The spelling of 4778998837 in words is "four billion, seven hundred seventy-eight million, nine hundred ninety-eight thousand, eight hundred thirty-seven".