2988787778 has 8 divisors (see below), whose sum is σ = 4486209168. Its totient is φ = 1493384724.

The previous prime is 2988787759. The next prime is 2988787787. The reversal of 2988787778 is 8777878892.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500876 + ... + 506807.

It is an arithmetic number, because the mean of its divisors is an integer number (560776146).

Almost surely, 2^2988787778 is an apocalyptic number.

2988787778 is a deficient number, since it is larger than the sum of its proper divisors (1497421390).

2988787778 is a wasteful number, since it uses less digits than its factorization.

2988787778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009168.

The product of its digits is 177020928, while the sum is 71.

The square root of 2988787778 is about 54669.8068224134. The cubic root of 2988787778 is about 1440.4505692024.

The spelling of 2988787778 in words is "two billion, nine hundred eighty-eight million, seven hundred eighty-seven thousand, seven hundred seventy-eight".