1530665263 has 4 divisors (see below), whose sum is σ = 1532331760. Its totient is φ = 1528998768.

The previous prime is 1530665221. The next prime is 1530665299. The reversal of 1530665263 is 3625660351.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1530665263 is a prime.

It is a super-2 number, since 2×1530665263² = 4685872294709718338, which contains 22 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 (1530668263) 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, 831870 + ... + 833707.

It is an arithmetic number, because the mean of its divisors is an integer number (383082940).

Almost surely, 2^1530665263 is an apocalyptic number.

1530665263 is a deficient number, since it is larger than the sum of its proper divisors (1666497).

1530665263 is an equidigital number, since it uses as much as digits as its factorization.

1530665263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666496.

The product of its (nonzero) digits is 97200, while the sum is 37.

The square root of 1530665263 is about 39123.7173975071. The cubic root of 1530665263 is about 1152.4623390871.

The spelling of 1530665263 in words is "one billion, five hundred thirty million, six hundred sixty-five thousand, two hundred sixty-three".