2878456693 has 16 divisors (see below), whose sum is σ = 3439284480. Its totient is φ = 2359907088.

The previous prime is 2878456687. The next prime is 2878456697. The reversal of 2878456693 is 3966548782.

It is not a de Polignac number, because 2878456693 - 2²⁹ = 2341585781 is a prime.

It is a super-3 number, since 3×2878456693³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2878456697) 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 15 ways as a sum of consecutive naturals, for example, 68271 + ... + 102067.

It is an arithmetic number, because the mean of its divisors is an integer number (214955280).

Almost surely, 2^2878456693 is an apocalyptic number.

2878456693 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2878456693 is a deficient number, since it is larger than the sum of its proper divisors (560827787).

2878456693 is an frugal number, since it uses more digits than its factorization.

2878456693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33873 (or 33827 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 58.

The square root of 2878456693 is about 53651.2506191608. The cubic root of 2878456693 is about 1422.5031385016.

The spelling of 2878456693 in words is "two billion, eight hundred seventy-eight million, four hundred fifty-six thousand, six hundred ninety-three".