101845813 has 2 divisors, whose sum is σ = 101845814. Its totient is φ = 101845812.

The previous prime is 101845811. The next prime is 101845837. The reversal of 101845813 is 318548101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56445169 + 45400644 = 7513^2 + 6738^2 .

It is an emirp because it is prime and its reverse (318548101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101845813 - 2¹ = 101845811 is a prime.

Together with 101845811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101845811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50922906 + 50922907.

It is an arithmetic number, because the mean of its divisors is an integer number (50922907).

Almost surely, 2^101845813 is an apocalyptic number.

It is an amenable number.

101845813 is a deficient number, since it is larger than the sum of its proper divisors (1).

101845813 is an equidigital number, since it uses as much as digits as its factorization.

101845813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 101845813 is about 10091.8686574886. The cubic root of 101845813 is about 466.9973252357.

The spelling of 101845813 in words is "one hundred one million, eight hundred forty-five thousand, eight hundred thirteen".