130779193 has 2 divisors, whose sum is σ = 130779194. Its totient is φ = 130779192.

The previous prime is 130779191. The next prime is 130779221. The reversal of 130779193 is 391977031.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127848249 + 2930944 = 11307^2 + 1712^2 .

It is a cyclic number.

It is not a de Polignac number, because 130779193 - 2¹ = 130779191 is a prime.

Together with 130779191, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (130779191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65389596 + 65389597.

It is an arithmetic number, because the mean of its divisors is an integer number (65389597).

Almost surely, 2^130779193 is an apocalyptic number.

It is an amenable number.

130779193 is a deficient number, since it is larger than the sum of its proper divisors (1).

130779193 is an equidigital number, since it uses as much as digits as its factorization.

130779193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35721, while the sum is 40.

The square root of 130779193 is about 11435.8730755461. The cubic root of 130779193 is about 507.5897976622.

The spelling of 130779193 in words is "one hundred thirty million, seven hundred seventy-nine thousand, one hundred ninety-three".