2658871878 has 32 divisors (see below), whose sum is σ = 5728855776. Its totient is φ = 817820928.

The previous prime is 2658871871. The next prime is 2658871879. The reversal of 2658871878 is 8781788562.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2658871871) 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, 331200 + ... + 339132.

It is an arithmetic number, because the mean of its divisors is an integer number (179026743).

Almost surely, 2^2658871878 is an apocalyptic number.

2658871878 is an abundant number, since it is smaller than the sum of its proper divisors (3069983898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2658871878 is a wasteful number, since it uses less digits than its factorization.

2658871878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12248.

The product of its digits is 12042240, while the sum is 60.

The square root of 2658871878 is about 51564.2499993940. The cubic root of 2658871878 is about 1385.3700789162.

The spelling of 2658871878 in words is "two billion, six hundred fifty-eight million, eight hundred seventy-one thousand, eight hundred seventy-eight".