2787893378 has 8 divisors (see below), whose sum is σ = 4222440768. Its totient is φ = 1380413124.

The previous prime is 2787893377. The next prime is 2787893387. The reversal of 2787893378 is 8733987872.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2787893378.

It is not an unprimeable number, because it can be changed into a prime (2787893377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6766526 + ... + 6766937.

It is an arithmetic number, because the mean of its divisors is an integer number (527805096).

Almost surely, 2^2787893378 is an apocalyptic number.

2787893378 is a deficient number, since it is larger than the sum of its proper divisors (1434547390).

2787893378 is a wasteful number, since it uses less digits than its factorization.

2787893378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13533568.

The product of its digits is 28449792, while the sum is 62.

The square root of 2787893378 is about 52800.5054710653. The cubic root of 2787893378 is about 1407.4254072385.

The spelling of 2787893378 in words is "two billion, seven hundred eighty-seven million, eight hundred ninety-three thousand, three hundred seventy-eight".