2878438881 has 8 divisors (see below), whose sum is σ = 3838454464. Its totient is φ = 1918691280.

The previous prime is 2878438879. The next prime is 2878438897. The reversal of 2878438881 is 1888348782.

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

It is not a de Polignac number, because 2878438881 - 2¹ = 2878438879 is a prime.

It is a super-2 number, since 2×2878438881² = 16570820783305064322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2878438081) 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, 40426 + ... + 85971.

It is an arithmetic number, because the mean of its divisors is an integer number (479806808).

Almost surely, 2^2878438881 is an apocalyptic number.

It is an amenable number.

2878438881 is a deficient number, since it is larger than the sum of its proper divisors (960015583).

2878438881 is a wasteful number, since it uses less digits than its factorization.

2878438881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133991.

The product of its digits is 5505024, while the sum is 57.

The square root of 2878438881 is about 53651.0846209096. The cubic root of 2878438881 is about 1422.5002043276.

Subtracting from 2878438881 its reverse (1888348782), we obtain a palindrome (990090099).

The spelling of 2878438881 in words is "two billion, eight hundred seventy-eight million, four hundred thirty-eight thousand, eight hundred eighty-one".