2878205261 has 8 divisors (see below), whose sum is σ = 2987654400. Its totient is φ = 2769793920.

The previous prime is 2878205251. The next prime is 2878205287. The reversal of 2878205261 is 1625028782.

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 2878205261 - 2¹⁰ = 2878204237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2878205221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253796 + ... + 264893.

It is an arithmetic number, because the mean of its divisors is an integer number (373456800).

Almost surely, 2^2878205261 is an apocalyptic number.

It is an amenable number.

2878205261 is a deficient number, since it is larger than the sum of its proper divisors (109449139).

2878205261 is a wasteful number, since it uses less digits than its factorization.

2878205261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518899.

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 2878205261 is about 53648.9073607282. The cubic root of 2878205261 is about 1422.4617189423.

The spelling of 2878205261 in words is "two billion, eight hundred seventy-eight million, two hundred five thousand, two hundred sixty-one".