2738778500 has 48 divisors (see below), whose sum is σ = 5990904192. Its totient is φ = 1093788000.

The previous prime is 2738778491. The next prime is 2738778529. The reversal of 2738778500 is 58778372.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 341537 + ... + 349463.

It is an arithmetic number, because the mean of its divisors is an integer number (124810504).

Almost surely, 2^2738778500 is an apocalyptic number.

2738778500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2738778500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2995452096).

2738778500 is an abundant number, since it is smaller than the sum of its proper divisors (3252125692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2738778500 is a wasteful number, since it uses less digits than its factorization.

2738778500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8637 (or 8625 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 47.

The square root of 2738778500 is about 52333.3402335452. The cubic root of 2738778500 is about 1399.1114259411. Note that the first 3 decimals are identical.

The spelling of 2738778500 in words is "two billion, seven hundred thirty-eight million, seven hundred seventy-eight thousand, five hundred".