195412594249 has 4 divisors (see below), whose sum is σ = 195466003920. Its totient is φ = 195359184580.

The previous prime is 195412594241. The next prime is 195412594343. The reversal of 195412594249 is 942495214591.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 195412594249 - 2³ = 195412594241 is a prime.

It is a super-2 number, since 2×195412594249² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 195412594249.

It is not an unprimeable number, because it can be changed into a prime (195412594241) 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, 26699347 + ... + 26706664.

It is an arithmetic number, because the mean of its divisors is an integer number (48866500980).

Almost surely, 2^195412594249 is an apocalyptic number.

It is an amenable number.

195412594249 is a deficient number, since it is larger than the sum of its proper divisors (53409671).

195412594249 is an equidigital number, since it uses as much as digits as its factorization.

195412594249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53409670.

The product of its digits is 4665600, while the sum is 55.

The spelling of 195412594249 in words is "one hundred ninety-five billion, four hundred twelve million, five hundred ninety-four thousand, two hundred forty-nine".