2068142805 has 24 divisors (see below), whose sum is σ = 3596258328. Its totient is φ = 1099478016.

The previous prime is 2068142777. The next prime is 2068142807. The reversal of 2068142805 is 5082418602.

It can be written as a sum of positive squares in 4 ways, for example, as 217680516 + 1850462289 = 14754^2 + 43017^2 .

It is not a de Polignac number, because 2068142805 - 2⁷ = 2068142677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2068142805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2068142807) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59332 + ... + 87501.

It is an arithmetic number, because the mean of its divisors is an integer number (149844097).

Almost surely, 2^2068142805 is an apocalyptic number.

It is an amenable number.

2068142805 is a deficient number, since it is larger than the sum of its proper divisors (1528115523).

2068142805 is a wasteful number, since it uses less digits than its factorization.

2068142805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147157 (or 147154 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 2068142805 is about 45476.8381156826. The cubic root of 2068142805 is about 1274.0706399306.

The spelling of 2068142805 in words is "two billion, sixty-eight million, one hundred forty-two thousand, eight hundred five".