1530469881 has 12 divisors (see below), whose sum is σ = 2226816852. Its totient is φ = 1012864896.

The previous prime is 1530469873. The next prime is 1530469891. The reversal of 1530469881 is 1889640351.

It can be written as a sum of positive squares in 2 ways, for example, as 887086656 + 643383225 = 29784^2 + 25365^2 .

It is not a de Polignac number, because 1530469881 - 2³ = 1530469873 is a prime.

It is a super-2 number, since 2×1530469881² = 4684676113296308322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1530469891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 619396 + ... + 621861.

It is an arithmetic number, because the mean of its divisors is an integer number (185568071).

Almost surely, 2^1530469881 is an apocalyptic number.

It is an amenable number.

1530469881 is a deficient number, since it is larger than the sum of its proper divisors (696346971).

1530469881 is a wasteful number, since it uses less digits than its factorization.

1530469881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241400 (or 1241397 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 1530469881 is about 39121.2203413953. The cubic root of 1530469881 is about 1152.4133015905.

The spelling of 1530469881 in words is "one billion, five hundred thirty million, four hundred sixty-nine thousand, eight hundred eighty-one".