920819023 has 4 divisors (see below), whose sum is σ = 932475040. Its totient is φ = 909163008.

The previous prime is 920819017. The next prime is 920819051. The reversal of 920819023 is 320918029.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 920819023 - 2¹⁷ = 920687951 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 920819023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920819083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5827890 + ... + 5828047.

It is an arithmetic number, because the mean of its divisors is an integer number (233118760).

Almost surely, 2^920819023 is an apocalyptic number.

920819023 is a deficient number, since it is larger than the sum of its proper divisors (11656017).

920819023 is a wasteful number, since it uses less digits than its factorization.

920819023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11656016.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 920819023 is about 30344.9999670456. Note that the first 4 decimals coincide. The cubic root of 920819023 is about 972.8773538834.

The spelling of 920819023 in words is "nine hundred twenty million, eight hundred nineteen thousand, twenty-three".