1530642173 has 16 divisors (see below), whose sum is σ = 1596945456. Its totient is φ = 1466150400.

The previous prime is 1530642167. The next prime is 1530642181. The reversal of 1530642173 is 3712460351.

It can be written as a sum of positive squares in 8 ways, for example, as 500103769 + 1030538404 = 22363^2 + 32102^2 .

It is a cyclic number.

It is not a de Polignac number, because 1530642173 - 2²² = 1526447869 is a prime.

It is a super-3 number, since 3×1530642173³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1530642193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 388811 + ... + 392727.

It is an arithmetic number, because the mean of its divisors is an integer number (99809091).

Almost surely, 2^1530642173 is an apocalyptic number.

It is an amenable number.

1530642173 is a deficient number, since it is larger than the sum of its proper divisors (66303283).

1530642173 is a wasteful number, since it uses less digits than its factorization.

1530642173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4144.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 1530642173 is about 39123.4223068484. The cubic root of 1530642173 is about 1152.4565441146.

The spelling of 1530642173 in words is "one billion, five hundred thirty million, six hundred forty-two thousand, one hundred seventy-three".