130166779 has 4 divisors (see below), whose sum is σ = 130236120. Its totient is φ = 130097440.

The previous prime is 130166753. The next prime is 130166783. The reversal of 130166779 is 977661031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 977661031 = 41 ⋅23845391.

It is a cyclic number.

It is not a de Polignac number, because 130166779 - 2⁷ = 130166651 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130166749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31774 + ... + 35635.

It is an arithmetic number, because the mean of its divisors is an integer number (32559030).

Almost surely, 2^130166779 is an apocalyptic number.

130166779 is a deficient number, since it is larger than the sum of its proper divisors (69341).

130166779 is an equidigital number, since it uses as much as digits as its factorization.

130166779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69340.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 130166779 is about 11409.0656497366. The cubic root of 130166779 is about 506.7962422998.

The spelling of 130166779 in words is "one hundred thirty million, one hundred sixty-six thousand, seven hundred seventy-nine".