2146866813 has 48 divisors (see below), whose sum is σ = 3888743040. Its totient is φ = 1111024512.

The previous prime is 2146866793. The next prime is 2146866833. The reversal of 2146866813 is 3186686412.

It is an interprime number because it is at equal distance from previous prime (2146866793) and next prime (2146866833).

It is not a de Polignac number, because 2146866813 - 2⁶ = 2146866749 is a prime.

It is a super-2 number, since 2×2146866813² = 9218074225521553938, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2146866833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18678 + ... + 68136.

It is an arithmetic number, because the mean of its divisors is an integer number (81015480).

Almost surely, 2^2146866813 is an apocalyptic number.

It is an amenable number.

2146866813 is a deficient number, since it is larger than the sum of its proper divisors (1741876227).

2146866813 is a wasteful number, since it uses less digits than its factorization.

2146866813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49538 (or 49535 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 2146866813 is about 46334.2941351220. The cubic root of 2146866813 is about 1290.0356164675.

The spelling of 2146866813 in words is "two billion, one hundred forty-six million, eight hundred sixty-six thousand, eight hundred thirteen".