4778737139 has 18 divisors (see below), whose sum is σ = 5507006004. Its totient is φ = 4111907040.

The previous prime is 4778737123. The next prime is 4778737157. The reversal of 4778737139 is 9317378774.

It is a happy number.

It is not a de Polignac number, because 4778737139 - 2⁴ = 4778737123 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4778737339) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4355639 + ... + 4356735.

It is an arithmetic number, because the mean of its divisors is an integer number (305944778).

Almost surely, 2^4778737139 is an apocalyptic number.

4778737139 is a deficient number, since it is larger than the sum of its proper divisors (728268865).

4778737139 is an equidigital number, since it uses as much as digits as its factorization.

4778737139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2243 (or 1127 counting only the distinct ones).

The product of its digits is 6223392, while the sum is 56.

The square root of 4778737139 is about 69128.4105053776. The cubic root of 4778737139 is about 1684.3708392562.

The spelling of 4778737139 in words is "four billion, seven hundred seventy-eight million, seven hundred thirty-seven thousand, one hundred thirty-nine".