2808117642 has 16 divisors (see below), whose sum is σ = 6126802272. Its totient is φ = 850944720.

The previous prime is 2808117617. The next prime is 2808117649. The reversal of 2808117642 is 2467118082.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2808117642.

It is not an unprimeable number, because it can be changed into a prime (2808117649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21273553 + ... + 21273684.

It is an arithmetic number, because the mean of its divisors is an integer number (382925142).

Almost surely, 2^2808117642 is an apocalyptic number.

2808117642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2808117642 is an abundant number, since it is smaller than the sum of its proper divisors (3318684630).

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

2808117642 is a wasteful number, since it uses less digits than its factorization.

2808117642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42547253.

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 2808117642 is about 52991.6752141315. The cubic root of 2808117642 is about 1410.8205143313.

The spelling of 2808117642 in words is "two billion, eight hundred eight million, one hundred seventeen thousand, six hundred forty-two".