2748783686 has 64 divisors (see below), whose sum is σ = 4957666560. Its totient is φ = 1128744960.

The previous prime is 2748783677. The next prime is 2748783689. The reversal of 2748783686 is 6863878472.

It is a happy number.

2748783686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2748783689) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 947390 + ... + 950286.

It is an arithmetic number, because the mean of its divisors is an integer number (77463540).

Almost surely, 2^2748783686 is an apocalyptic number.

2748783686 is a deficient number, since it is larger than the sum of its proper divisors (2208882874).

2748783686 is a wasteful number, since it uses less digits than its factorization.

2748783686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3029.

The product of its digits is 21676032, while the sum is 59.

The square root of 2748783686 is about 52428.8440269285. The cubic root of 2748783686 is about 1400.8130797361.

The spelling of 2748783686 in words is "two billion, seven hundred forty-eight million, seven hundred eighty-three thousand, six hundred eighty-six".