2066149806 has 32 divisors (see below), whose sum is σ = 4787328768. Its totient is φ = 582240960.

The previous prime is 2066149763. The next prime is 2066149807. The reversal of 2066149806 is 6089416602.

It is a super-3 number, since 3×2066149806³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066149807) 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 15 ways as a sum of consecutive naturals, for example, 333880 + ... + 340011.

It is an arithmetic number, because the mean of its divisors is an integer number (149604024).

Almost surely, 2^2066149806 is an apocalyptic number.

2066149806 is an abundant number, since it is smaller than the sum of its proper divisors (2721178962).

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

2066149806 is a wasteful number, since it uses less digits than its factorization.

2066149806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673976.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 2066149806 is about 45454.9205917247. The cubic root of 2066149806 is about 1273.6612488582.

The spelling of 2066149806 in words is "two billion, sixty-six million, one hundred forty-nine thousand, eight hundred six".