2878439801 has 4 divisors (see below), whose sum is σ = 2880369252. Its totient is φ = 2876510352.

The previous prime is 2878439783. The next prime is 2878439831. The reversal of 2878439801 is 1089348782.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1089348782 = 2 ⋅544674391.

It can be written as a sum of positive squares in 2 ways, for example, as 2516527225 + 361912576 = 50165^2 + 19024^2 .

It is a cyclic number.

It is not a de Polignac number, because 2878439801 - 2¹⁴ = 2878423417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2878439801.

It is not an unprimeable number, because it can be changed into a prime (2878439831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 962486 + ... + 965471.

It is an arithmetic number, because the mean of its divisors is an integer number (720092313).

Almost surely, 2^2878439801 is an apocalyptic number.

It is an amenable number.

2878439801 is a deficient number, since it is larger than the sum of its proper divisors (1929451).

2878439801 is a wasteful number, since it uses less digits than its factorization.

2878439801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1929450.

The product of its (nonzero) digits is 774144, while the sum is 50.

The square root of 2878439801 is about 53651.0931948269. The cubic root of 2878439801 is about 1422.5003558797.

The spelling of 2878439801 in words is "two billion, eight hundred seventy-eight million, four hundred thirty-nine thousand, eight hundred one".