195779889469 has 8 divisors (see below), whose sum is σ = 196241100480. Its totient is φ = 195319147200.

The previous prime is 195779889443. The next prime is 195779889511. The reversal of 195779889469 is 964988977591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 195779889469 - 2⁷ = 195779889341 is a prime.

It is a super-2 number, since 2×195779889469² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 195779889392 and 195779889401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195779889869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 726264 + ... + 958654.

It is an arithmetic number, because the mean of its divisors is an integer number (24530137560).

Almost surely, 2^195779889469 is an apocalyptic number.

It is an amenable number.

195779889469 is a deficient number, since it is larger than the sum of its proper divisors (461211011).

195779889469 is a wasteful number, since it uses less digits than its factorization.

195779889469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234371.

The product of its digits is 2469035520, while the sum is 82.

The spelling of 195779889469 in words is "one hundred ninety-five billion, seven hundred seventy-nine million, eight hundred eighty-nine thousand, four hundred sixty-nine".