1530856641 has 8 divisors (see below), whose sum is σ = 2041517824. Its totient is φ = 1020383280.

The previous prime is 1530856633. The next prime is 1530856643. The reversal of 1530856641 is 1466580351.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1530856641 - 2³ = 1530856633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1530856641.

It is not an unprimeable number, because it can be changed into a prime (1530856643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26686 + ... + 61431.

It is an arithmetic number, because the mean of its divisors is an integer number (255189728).

Almost surely, 2^1530856641 is an apocalyptic number.

It is an amenable number.

1530856641 is a deficient number, since it is larger than the sum of its proper divisors (510661183).

1530856641 is an equidigital number, since it uses as much as digits as its factorization.

1530856641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93911.

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 1530856641 is about 39126.1631264810. The cubic root of 1530856641 is about 1152.5103676037.

The spelling of 1530856641 in words is "one billion, five hundred thirty million, eight hundred fifty-six thousand, six hundred forty-one".