2066338849 has 9 divisors (see below), whose sum is σ = 2088250801. Its totient is φ = 2044655860.

The previous prime is 2066338847. The next prime is 2066338861. The reversal of 2066338849 is 9488336602.

It is a happy number.

The square root of 2066338849 is 45457.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 2066338849 - 2¹ = 2066338847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2066338847) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5954694 + ... + 5955040.

Almost surely, 2^2066338849 is an apocalyptic number.

2066338849 is the 45457-th square number.

2066338849 is the 22729-th centered octagonal number.

It is an amenable number.

2066338849 is a deficient number, since it is larger than the sum of its proper divisors (21911952).

2066338849 is an frugal number, since it uses more digits than its factorization.

2066338849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956 (or 478 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 49.

The cubic root of 2066338849 is about 1273.7000923470.

Multiplying 2066338849 by its sum of digits (49), we get a square (101250603601 = 318199²).

The spelling of 2066338849 in words is "two billion, sixty-six million, three hundred thirty-eight thousand, eight hundred forty-nine".