1009723073 has 4 divisors (see below), whose sum is σ = 1044541140. Its totient is φ = 974905008.

The previous prime is 1009723037. The next prime is 1009723147. The reversal of 1009723073 is 3703279001.

1009723073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3703279001 = 173 ⋅21406237.

It can be written as a sum of positive squares in 2 ways, for example, as 571783744 + 437939329 = 23912^2 + 20927^2 .

It is a cyclic number.

It is not a de Polignac number, because 1009723073 - 2⁶ = 1009723009 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1009723373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17408990 + ... + 17409047.

It is an arithmetic number, because the mean of its divisors is an integer number (261135285).

Almost surely, 2^1009723073 is an apocalyptic number.

It is an amenable number.

1009723073 is a deficient number, since it is larger than the sum of its proper divisors (34818067).

1009723073 is an equidigital number, since it uses as much as digits as its factorization.

1009723073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34818066.

The product of its (nonzero) digits is 7938, while the sum is 32.

The square root of 1009723073 is about 31776.1399952858. The cubic root of 1009723073 is about 1003.2305764702.

The spelling of 1009723073 in words is "one billion, nine million, seven hundred twenty-three thousand, seventy-three".