4778555338 has 4 divisors (see below), whose sum is σ = 7167833010. Its totient is φ = 2389277668.

The previous prime is 4778555333. The next prime is 4778555339. The reversal of 4778555338 is 8335558774.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3241366489 + 1537188849 = 56933^2 + 39207^2 .

It is a super-2 number, since 2×4778555338² = 45669182236656588488, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4778555333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1194638833 + ... + 1194638836.

Almost surely, 2^4778555338 is an apocalyptic number.

4778555338 is a deficient number, since it is larger than the sum of its proper divisors (2389277672).

4778555338 is a wasteful number, since it uses less digits than its factorization.

4778555338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2389277671.

The product of its digits is 14112000, while the sum is 55.

The square root of 4778555338 is about 69127.0955414735. The cubic root of 4778555338 is about 1684.3494790671.

The spelling of 4778555338 in words is "four billion, seven hundred seventy-eight million, five hundred fifty-five thousand, three hundred thirty-eight".