920819017 has 2 divisors, whose sum is σ = 920819018. Its totient is φ = 920819016.

The previous prime is 920818949. The next prime is 920819051. The reversal of 920819017 is 710918029.

920819017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 920272896 + 546121 = 30336^2 + 739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-920819017 is a prime.

It is not a weakly prime, because it can be changed into another prime (920819057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460409508 + 460409509.

It is an arithmetic number, because the mean of its divisors is an integer number (460409509).

Almost surely, 2^920819017 is an apocalyptic number.

It is an amenable number.

920819017 is a deficient number, since it is larger than the sum of its proper divisors (1).

920819017 is an equidigital number, since it uses as much as digits as its factorization.

920819017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 920819017 is about 30344.9998681826. Note that the first 3 decimals coincide. The cubic root of 920819017 is about 972.8773517703.

The spelling of 920819017 in words is "nine hundred twenty million, eight hundred nineteen thousand, seventeen".