2578679802 has 24 divisors (see below), whose sum is σ = 5589219636. Its totient is φ = 859239936.

The previous prime is 2578679749. The next prime is 2578679809. The reversal of 2578679802 is 2089768752.

It is a happy number.

2578679802 is a `hidden beast` number, since 2 + 578 + 67 + 9 + 8 + 0 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1945603881 + 633075921 = 44109^2 + 25161^2 .

It is not an unprimeable number, because it can be changed into a prime (2578679809) 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 11 ways as a sum of consecutive naturals, for example, 25818 + ... + 76314.

Almost surely, 2^2578679802 is an apocalyptic number.

2578679802 is an abundant number, since it is smaller than the sum of its proper divisors (3010539834).

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

2578679802 is a wasteful number, since it uses less digits than its factorization.

2578679802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53342 (or 53339 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 54.

The square root of 2578679802 is about 50780.7030475160. The cubic root of 2578679802 is about 1371.2999900562.

The spelling of 2578679802 in words is "two billion, five hundred seventy-eight million, six hundred seventy-nine thousand, eight hundred two".