195122986 has 4 divisors (see below), whose sum is σ = 292684482. Its totient is φ = 97561492.

The previous prime is 195122929. The next prime is 195122987. The reversal of 195122986 is 689221591.

195122986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 195021225 + 101761 = 13965^2 + 319^2 .

It is not an unprimeable number, because it can be changed into a prime (195122987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48780745 + ... + 48780748.

Almost surely, 2^195122986 is an apocalyptic number.

195122986 is a deficient number, since it is larger than the sum of its proper divisors (97561496).

195122986 is an equidigital number, since it uses as much as digits as its factorization.

195122986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97561495.

The product of its digits is 77760, while the sum is 43.

The square root of 195122986 is about 13968.6429548471. The cubic root of 195122986 is about 580.0108856459.

The spelling of 195122986 in words is "one hundred ninety-five million, one hundred twenty-two thousand, nine hundred eighty-six".