130278818 has 8 divisors (see below), whose sum is σ = 195847212. Its totient is φ = 64996416.

The previous prime is 130278791. The next prime is 130278847. The reversal of 130278818 is 818872031.

It can be written as a sum of positive squares in 2 ways, for example, as 124835929 + 5442889 = 11173^2 + 2333^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70355 + ... + 72182.

Almost surely, 2^130278818 is an apocalyptic number.

130278818 is a deficient number, since it is larger than the sum of its proper divisors (65568394).

130278818 is a wasteful number, since it uses less digits than its factorization.

130278818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142996.

The product of its (nonzero) digits is 21504, while the sum is 38.

The square root of 130278818 is about 11413.9746801892. The cubic root of 130278818 is about 506.9416062227.

The spelling of 130278818 in words is "one hundred thirty million, two hundred seventy-eight thousand, eight hundred eighteen".