2513687878 has 32 divisors (see below), whose sum is σ = 4344409440. Its totient is φ = 1081071360.

The previous prime is 2513687873. The next prime is 2513687879. The reversal of 2513687878 is 8787863152.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2513687873) 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, 11575 + ... + 71842.

It is an arithmetic number, because the mean of its divisors is an integer number (135762795).

Almost surely, 2^2513687878 is an apocalyptic number.

2513687878 is a deficient number, since it is larger than the sum of its proper divisors (1830721562).

2513687878 is a wasteful number, since it uses less digits than its factorization.

2513687878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83512.

The product of its digits is 4515840, while the sum is 55.

The square root of 2513687878 is about 50136.6919331541. The cubic root of 2513687878 is about 1359.6812758732.

The spelling of 2513687878 in words is "two billion, five hundred thirteen million, six hundred eighty-seven thousand, eight hundred seventy-eight".