Search a number
-
+
130909195 = 526181839
BaseRepresentation
bin1111100110110…
…00010000001011
3100010022212122201
413303120100023
5232003043240
620553501031
73146465314
oct763302013
9303285581
10130909195
116799301a
1237a11777
1321176581
141355960b
15b75cd9a
hex7cd840b

130909195 has 4 divisors (see below), whose sum is σ = 157091040. Its totient is φ = 104727352.

The previous prime is 130909193. The next prime is 130909211. The reversal of 130909195 is 591909031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 591909031 = 784558433.

It is a cyclic number.

It is not a de Polignac number, because 130909195 - 21 = 130909193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (130909193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13090915 + ... + 13090924.

It is an arithmetic number, because the mean of its divisors is an integer number (39272760).

Almost surely, 2130909195 is an apocalyptic number.

130909195 is a deficient number, since it is larger than the sum of its proper divisors (26181845).

130909195 is an equidigital number, since it uses as much as digits as its factorization.

130909195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26181844.

The product of its (nonzero) digits is 10935, while the sum is 37.

The square root of 130909195 is about 11441.5556197573. Note that the first 3 decimals coincide. The cubic root of 130909195 is about 507.7579330622.

The spelling of 130909195 in words is "one hundred thirty million, nine hundred nine thousand, one hundred ninety-five".

Divisors: 1 5 26181839 130909195