7832581380 has 72 divisors (see below), whose sum is σ = 25586440152. Its totient is φ = 1928019456.

The previous prime is 7832581331. The next prime is 7832581381. The reversal of 7832581380 is 831852387.

7832581380 is a `hidden beast` number, since 7 + 8 + 32 + 581 + 38 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 23677956 + 7808903424 = 4866^2 + 88368^2 .

It is a super-2 number, since 2×7832581380² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (7832581381) 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 23 ways as a sum of consecutive naturals, for example, 1671289 + ... + 1675968.

Almost surely, 2^7832581380 is an apocalyptic number.

It is an amenable number.

7832581380 is an abundant number, since it is smaller than the sum of its proper divisors (17753858772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7832581380 is a wasteful number, since it uses less digits than its factorization.

7832581380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3347285 (or 3347280 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 7832581380 is about 88501.8721835872. The cubic root of 7832581380 is about 1985.9499778993.

The spelling of 7832581380 in words is "seven billion, eight hundred thirty-two million, five hundred eighty-one thousand, three hundred eighty".