1530132381 has 6 divisors (see below), whose sum is σ = 2210191230. Its totient is φ = 1020088248.

The previous prime is 1530132367. The next prime is 1530132397. The reversal of 1530132381 is 1832310351.

1530132381 is a `hidden beast` number, since 153 + 0 + 132 + 381 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1526152356 + 3980025 = 39066^2 + 1995^2 .

It is not a de Polignac number, because 1530132381 - 2⁵ = 1530132349 is a prime.

It is a super-2 number, since 2×1530132381² = 4682610206769458322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1530132181) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 85007346 + ... + 85007363.

It is an arithmetic number, because the mean of its divisors is an integer number (368365205).

Almost surely, 2^1530132381 is an apocalyptic number.

It is an amenable number.

1530132381 is a deficient number, since it is larger than the sum of its proper divisors (680058849).

1530132381 is a wasteful number, since it uses less digits than its factorization.

1530132381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170014715 (or 170014712 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1530132381 is about 39116.9065878170. The cubic root of 1530132381 is about 1152.3285851062.

The spelling of 1530132381 in words is "one billion, five hundred thirty million, one hundred thirty-two thousand, three hundred eighty-one".