1500730073 has 4 divisors (see below), whose sum is σ = 1501535760. Its totient is φ = 1499924388.

The previous prime is 1500730037. The next prime is 1500730109. The reversal of 1500730073 is 3700370051.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3700370051 = 7 ⋅528624293.

It is an interprime number because it is at equal distance from previous prime (1500730037) and next prime (1500730109).

It is a cyclic number.

It is not a de Polignac number, because 1500730073 - 2⁸ = 1500729817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1500738073) 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, 400043 + ... + 403776.

It is an arithmetic number, because the mean of its divisors is an integer number (375383940).

Almost surely, 2^1500730073 is an apocalyptic number.

It is an amenable number.

1500730073 is a deficient number, since it is larger than the sum of its proper divisors (805687).

1500730073 is an equidigital number, since it uses as much as digits as its factorization.

1500730073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805686.

The product of its (nonzero) digits is 2205, while the sum is 26.

The square root of 1500730073 is about 38739.2575174073. The cubic root of 1500730073 is about 1144.8999290891.

The spelling of 1500730073 in words is "one billion, five hundred million, seven hundred thirty thousand, seventy-three".