2006237778 has 16 divisors (see below), whose sum is σ = 4223658720. Its totient is φ = 633548736.

The previous prime is 2006237771. The next prime is 2006237837. The reversal of 2006237778 is 8777326002.

It is not an unprimeable number, because it can be changed into a prime (2006237771) 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, 8799175 + ... + 8799402.

It is an arithmetic number, because the mean of its divisors is an integer number (263978670).

Almost surely, 2^2006237778 is an apocalyptic number.

2006237778 is an abundant number, since it is smaller than the sum of its proper divisors (2217420942).

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

2006237778 is a wasteful number, since it uses less digits than its factorization.

2006237778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17598601.

The product of its (nonzero) digits is 197568, while the sum is 42.

The square root of 2006237778 is about 44791.0457346108. The cubic root of 2006237778 is about 1261.2295417904.

The spelling of 2006237778 in words is "two billion, six million, two hundred thirty-seven thousand, seven hundred seventy-eight".