130581618 has 16 divisors (see below), whose sum is σ = 261424800. Its totient is φ = 43483616.

The previous prime is 130581617. The next prime is 130581667. The reversal of 130581618 is 816185031.

It is not an unprimeable number, because it can be changed into a prime (130581617) 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, 4080 + ... + 16667.

It is an arithmetic number, because the mean of its divisors is an integer number (16339050).

Almost surely, 2^130581618 is an apocalyptic number.

130581618 is an abundant number, since it is smaller than the sum of its proper divisors (130843182).

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

130581618 is a wasteful number, since it uses less digits than its factorization.

130581618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21801.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 130581618 is about 11427.2314232276. The cubic root of 130581618 is about 507.3340546362.

The spelling of 130581618 in words is "one hundred thirty million, five hundred eighty-one thousand, six hundred eighteen".