4778638996 has 6 divisors (see below), whose sum is σ = 8362618250. Its totient is φ = 2389319496.

The previous prime is 4778638913. The next prime is 4778639003. The reversal of 4778638996 is 6998368774.

It can be written as a sum of positive squares in only one way, i.e., 3461674896 + 1316964100 = 58836^2 + 36290^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 597329871 + ... + 597329878.

Almost surely, 2^4778638996 is an apocalyptic number.

It is an amenable number.

4778638996 is a deficient number, since it is larger than the sum of its proper divisors (3583979254).

4778638996 is a wasteful number, since it uses less digits than its factorization.

4778638996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194659753 (or 1194659751 counting only the distinct ones).

The product of its digits is 109734912, while the sum is 67.

The square root of 4778638996 is about 69127.7006416386. The cubic root of 4778638996 is about 1684.3593082921.

The spelling of 4778638996 in words is "four billion, seven hundred seventy-eight million, six hundred thirty-eight thousand, nine hundred ninety-six".