920971573 has 2 divisors, whose sum is σ = 920971574. Its totient is φ = 920971572.

The previous prime is 920971567. The next prime is 920971603. The reversal of 920971573 is 375179029.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 916999524 + 3972049 = 30282^2 + 1993^2 .

It is a cyclic number.

It is not a de Polignac number, because 920971573 - 2²¹ = 918874421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (920971273) 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 as a sum of consecutive naturals, namely, 460485786 + 460485787.

It is an arithmetic number, because the mean of its divisors is an integer number (460485787).

Almost surely, 2^920971573 is an apocalyptic number.

It is an amenable number.

920971573 is a deficient number, since it is larger than the sum of its proper divisors (1).

920971573 is an equidigital number, since it uses as much as digits as its factorization.

920971573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 119070, while the sum is 43.

The square root of 920971573 is about 30347.5134566244. The cubic root of 920971573 is about 972.9310757121.

The spelling of 920971573 in words is "nine hundred twenty million, nine hundred seventy-one thousand, five hundred seventy-three".