2748770387 has 4 divisors (see below), whose sum is σ = 2998658616. Its totient is φ = 2498882160.

The previous prime is 2748770371. The next prime is 2748770407. The reversal of 2748770387 is 7830778472.

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

It is a cyclic number.

It is not a de Polignac number, because 2748770387 - 2⁴ = 2748770371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2748778387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124944098 + ... + 124944119.

It is an arithmetic number, because the mean of its divisors is an integer number (749664654).

Almost surely, 2^2748770387 is an apocalyptic number.

2748770387 is a deficient number, since it is larger than the sum of its proper divisors (249888229).

2748770387 is a wasteful number, since it uses less digits than its factorization.

2748770387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249888228.

The product of its (nonzero) digits is 3687936, while the sum is 53.

The square root of 2748770387 is about 52428.7171977343. The cubic root of 2748770387 is about 1400.8108206226.

The spelling of 2748770387 in words is "two billion, seven hundred forty-eight million, seven hundred seventy thousand, three hundred eighty-seven".