2748783657 has 8 divisors (see below), whose sum is σ = 3665324160. Its totient is φ = 1832382800.

The previous prime is 2748783649. The next prime is 2748783677. The reversal of 2748783657 is 7563878472.

It is a happy number.

2748783657 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2748783657 - 2³ = 2748783649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2748783597 and 2748783606.

It is not an unprimeable number, because it can be changed into a prime (2748783677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26407 + ... + 78707.

It is an arithmetic number, because the mean of its divisors is an integer number (458165520).

Almost surely, 2^2748783657 is an apocalyptic number.

It is an amenable number.

2748783657 is a deficient number, since it is larger than the sum of its proper divisors (916540503).

2748783657 is a wasteful number, since it uses less digits than its factorization.

2748783657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69823.

The product of its digits is 15805440, while the sum is 57.

The square root of 2748783657 is about 52428.8437503632. The cubic root of 2748783657 is about 1400.8130748098.

The spelling of 2748783657 in words is "two billion, seven hundred forty-eight million, seven hundred eighty-three thousand, six hundred fifty-seven".