920441813 has 2 divisors, whose sum is σ = 920441814. Its totient is φ = 920441812.

The previous prime is 920441783. The next prime is 920441861. The reversal of 920441813 is 318144029.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 637966564 + 282475249 = 25258^2 + 16807^2 .

It is a cyclic number.

It is not a de Polignac number, because 920441813 - 2²² = 916247509 is a prime.

It is a super-2 number, since 2×920441813² = 1694426262237453938, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 920441813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (920441113) 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 as a sum of consecutive naturals, namely, 460220906 + 460220907.

It is an arithmetic number, because the mean of its divisors is an integer number (460220907).

Almost surely, 2^920441813 is an apocalyptic number.

It is an amenable number.

920441813 is a deficient number, since it is larger than the sum of its proper divisors (1).

920441813 is an equidigital number, since it uses as much as digits as its factorization.

920441813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 920441813 is about 30338.7839736533. The cubic root of 920441813 is about 972.7444905739.

The spelling of 920441813 in words is "nine hundred twenty million, four hundred forty-one thousand, eight hundred thirteen".