2118846929 has 2 divisors, whose sum is σ = 2118846930. Its totient is φ = 2118846928.

The previous prime is 2118846859. The next prime is 2118847007. The reversal of 2118846929 is 9296488112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2027070529 + 91776400 = 45023^2 + 9580^2 .

It is a cyclic number.

It is not a de Polignac number, because 2118846929 - 2⁸ = 2118846673 is a prime.

It is not a weakly prime, because it can be changed into another prime (2618846929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1059423464 + 1059423465.

It is an arithmetic number, because the mean of its divisors is an integer number (1059423465).

Almost surely, 2^2118846929 is an apocalyptic number.

It is an amenable number.

2118846929 is a deficient number, since it is larger than the sum of its proper divisors (1).

2118846929 is an equidigital number, since it uses as much as digits as its factorization.

2118846929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 497664, while the sum is 50.

The square root of 2118846929 is about 46030.9344788915. The cubic root of 2118846929 is about 1284.3987111485.

The spelling of 2118846929 in words is "two billion, one hundred eighteen million, eight hundred forty-six thousand, nine hundred twenty-nine".