1530447073 has 4 divisors (see below), whose sum is σ = 1583221140. Its totient is φ = 1477673008.

The previous prime is 1530447067. The next prime is 1530447077. The reversal of 1530447073 is 3707440351.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1110688929 + 419758144 = 33327^2 + 20488^2 .

It is a cyclic number.

It is not a de Polignac number, because 1530447073 - 2¹⁷ = 1530316001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1530447077) 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, 26386990 + ... + 26387047.

It is an arithmetic number, because the mean of its divisors is an integer number (395805285).

Almost surely, 2^1530447073 is an apocalyptic number.

It is an amenable number.

1530447073 is a deficient number, since it is larger than the sum of its proper divisors (52774067).

1530447073 is an equidigital number, since it uses as much as digits as its factorization.

1530447073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52774066.

The product of its (nonzero) digits is 35280, while the sum is 34.

The square root of 1530447073 is about 39120.9288361102. The cubic root of 1530447073 is about 1152.4075769056.

The spelling of 1530447073 in words is "one billion, five hundred thirty million, four hundred forty-seven thousand, seventy-three".