1530735891 has 16 divisors (see below), whose sum is σ = 2080679328. Its totient is φ = 1000742400.

The previous prime is 1530735889. The next prime is 1530735907. The reversal of 1530735891 is 1985370351.

It is not a de Polignac number, because 1530735891 - 2¹ = 1530735889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1530735821) 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 15 ways as a sum of consecutive naturals, for example, 49261 + ... + 74081.

It is an arithmetic number, because the mean of its divisors is an integer number (130042458).

Almost surely, 2^1530735891 is an apocalyptic number.

1530735891 is a deficient number, since it is larger than the sum of its proper divisors (549943437).

1530735891 is a wasteful number, since it uses less digits than its factorization.

1530735891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25222.

The product of its (nonzero) digits is 113400, while the sum is 42.

The square root of 1530735891 is about 39124.6200109343. The cubic root of 1530735891 is about 1152.4800644644.

The spelling of 1530735891 in words is "one billion, five hundred thirty million, seven hundred thirty-five thousand, eight hundred ninety-one".