1530398369 has 4 divisors (see below), whose sum is σ = 1532046660. Its totient is φ = 1528750080.

The previous prime is 1530398323. The next prime is 1530398371. The reversal of 1530398369 is 9638930351.

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 776346769 + 754051600 = 27863^2 + 27460^2 .

It is a cyclic number.

It is not a de Polignac number, because 1530398369 - 2¹⁶ = 1530332833 is a prime.

It is a super-2 number, since 2×1530398369² = 4684238335675720322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1530398399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 822752 + ... + 824609.

It is an arithmetic number, because the mean of its divisors is an integer number (383011665).

Almost surely, 2^1530398369 is an apocalyptic number.

It is an amenable number.

1530398369 is a deficient number, since it is larger than the sum of its proper divisors (1648291).

1530398369 is an equidigital number, since it uses as much as digits as its factorization.

1530398369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1648290.

The product of its (nonzero) digits is 524880, while the sum is 47.

The square root of 1530398369 is about 39120.3063510500. The cubic root of 1530398369 is about 1152.3953522742.

The spelling of 1530398369 in words is "one billion, five hundred thirty million, three hundred ninety-eight thousand, three hundred sixty-nine".