2878064391 has 8 divisors (see below), whose sum is σ = 3841375104. Its totient is φ = 1916731640.

The previous prime is 2878064383. The next prime is 2878064393. The reversal of 2878064391 is 1934608782.

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 2878064391 - 2³ = 2878064383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2878064391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2878064393) 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 7 ways as a sum of consecutive naturals, for example, 491091 + ... + 496916.

It is an arithmetic number, because the mean of its divisors is an integer number (480171888).

Almost surely, 2^2878064391 is an apocalyptic number.

2878064391 is a deficient number, since it is larger than the sum of its proper divisors (963310713).

2878064391 is an equidigital number, since it uses as much as digits as its factorization.

2878064391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988981.

The product of its (nonzero) digits is 580608, while the sum is 48.

The square root of 2878064391 is about 53647.5944567881. The cubic root of 2878064391 is about 1422.4385117196.

The spelling of 2878064391 in words is "two billion, eight hundred seventy-eight million, sixty-four thousand, three hundred ninety-one".