130729357818 has 24 divisors (see below), whose sum is σ = 283258602900. Its totient is φ = 43574658624.

The previous prime is 130729357817. The next prime is 130729357849. The reversal of 130729357818 is 818753927031.

It is a happy number.

130729357818 is a `hidden beast` number, since 1 + 30 + 7 + 29 + 3 + 578 + 18 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 129105831969 + 1623525849 = 359313^2 + 40293^2 .

It is a super-2 number, since 2×130729357818² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (130729357813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 343878 + ... + 616206.

Almost surely, 2^130729357818 is an apocalyptic number.

130729357818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

130729357818 is an abundant number, since it is smaller than the sum of its proper divisors (152529245082).

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

130729357818 is a wasteful number, since it uses less digits than its factorization.

130729357818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299006 (or 299003 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 130729357818 in words is "one hundred thirty billion, seven hundred twenty-nine million, three hundred fifty-seven thousand, eight hundred eighteen".